78959231 has 8 divisors (see below), whose sum is σ = 89508720. Its totient is φ = 69049152.

The previous prime is 78959219. The next prime is 78959239. The reversal of 78959231 is 13295987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78959231 - 2²⁶ = 11850367 is a prime.

It is a super-2 number, since 2×78959231² = 12469120320222722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78959239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159590 + ... + 160083.

It is an arithmetic number, because the mean of its divisors is an integer number (11188590).

Almost surely, 2^78959231 is an apocalyptic number.

78959231 is a deficient number, since it is larger than the sum of its proper divisors (10549489).

78959231 is a wasteful number, since it uses less digits than its factorization.

78959231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319705.

The product of its digits is 136080, while the sum is 44.

The square root of 78959231 is about 8885.9006859181. The cubic root of 78959231 is about 429.0102184941.

The spelling of 78959231 in words is "seventy-eight million, nine hundred fifty-nine thousand, two hundred thirty-one".