Number of the day: 79447

Johann Bernoulli was born on this day 351 years ago.

Properties of the number 79447:

79447 is a cyclic number.
79447 = 53 × 1499 is semiprime and squarefree.
79447 has 2 distinct prime factors, 4 divisors, 35 antidivisors and 77896 totatives.
79447 has an emirp digit sum 31 in base 10.
Reversing the decimal digits of 79447 results in a sphenic number.
79447 = 39724² - 39723² = 776² - 723² is the difference of 2 nonnegative squares in 2 ways.
79447 is the sum of 2 positive triangular numbers.
79447 is the difference of 2 positive pentagonal numbers in 2 ways.
79447 is not the sum of 3 positive squares.
79447² = 41972² + 67455² is the sum of 2 positive squares in 1 way.
79447² is the sum of 3 positive squares.
79447 is a proper divisor of 953¹⁴ - 1.
79447 is an emirpimes in (at least) the following bases: 5, 7, 16, 18, 19, 23, 24, 25, 28, 29, 33, 35, 36, 38, 41, 42, 43, 44, 45, 49, 50, 51, 52, 56, 62, 64, 69, 71, 76, 77, 78, 79, 81, 83, 84, 87, 92, 94, 95, 97, 99, and 100.
79447 is palindromic in (at least) base -55.
79447 in base 54 = RDD and consists of only the digits 'D' and 'R'.
79447 in base 61 = LLP and consists of only the digits 'L' and 'P'.

The number 79447 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequence (among others):

Sequence number and description below are taken from OEIS.
A041530: Numerators of continued fraction convergents to sqrt(282).