### Properties of the number 399301:

399301 = 7^{2}× 29 × 281 is the 365494

^{th}composite number and is not squarefree.

399301 has 3 distinct prime factors, 12 divisors, 19 antidivisors and 329280 totatives.

399301 has a semiprime digit sum 25 in base 10.

Reversing the decimal digits of 399301 results in a prime.

399301 = 199651

^{2}- 199650

^{2}= 28525

^{2}- 28518

^{2}= 6899

^{2}- 6870

^{2}= 4099

^{2}- 4050

^{2}= 1085

^{2}- 882

^{2}= 851

^{2}- 570

^{2}is the difference of 2 nonnegative squares in 6 ways.

399301 is the sum of 2 positive triangular numbers.

399301 is the difference of 2 positive pentagonal numbers in 5 ways.

399301 = 399

^{2}+ 490

^{2}= 49

^{2}+ 630

^{2}is the sum of 2 positive squares in 2 ways.

399301 = 81

^{2}+ 104

^{2}+ 618

^{2}is the sum of 3 positive squares.

399301

^{2}= 227360

^{2}+ 328251

^{2}= 80899

^{2}+ 391020

^{2}= 61740

^{2}+ 394499

^{2}= 275380

^{2}+ 289149

^{2}is the sum of 2 positive squares in 4 ways.

399301

^{2}is the sum of 3 positive squares.

399301 is a proper divisor of 181

^{14}- 1.

399301 = '39' + '9301' is the concatenation of 2 semiprime numbers.

399301 is palindromic in (at least) base -85.

### The number 399301 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequence (among others):

Sequence number and description below are taken from OEIS.A230759: Values of x such that x^2 + y^2 = 53^n with x and y coprime and 0 < x < y.

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