79523969 has 8 divisors (see below), whose sum is σ = 93101568. Its totient is φ = 66500640.

The previous prime is 79523933. The next prime is 79523981. The reversal of 79523969 is 96932597.

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 79523969 - 2¹² = 79519873 is a prime.

It is a super-2 number, since 2×79523969² = 12648123291025922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79523069) 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, 138257 + ... + 138830.

It is an arithmetic number, because the mean of its divisors is an integer number (11637696).

Almost surely, 2^79523969 is an apocalyptic number.

It is an amenable number.

79523969 is a deficient number, since it is larger than the sum of its proper divisors (13577599).

79523969 is a wasteful number, since it uses less digits than its factorization.

79523969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277135.

The product of its digits is 918540, while the sum is 50.

The square root of 79523969 is about 8917.6212635433. The cubic root of 79523969 is about 430.0305891345.

The spelling of 79523969 in words is "seventy-nine million, five hundred twenty-three thousand, nine hundred sixty-nine".