79469640 has 64 divisors (see below), whose sum is σ = 264902400. Its totient is φ = 21191616.

The previous prime is 79469627. The next prime is 79469653. The reversal of 79469640 is 4696497.

It is an interprime number because it is at equal distance from previous prime (79469627) and next prime (79469653).

It is a super-3 number, since 3×79469640³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35712 + ... + 37871.

It is an arithmetic number, because the mean of its divisors is an integer number (4139100).

Almost surely, 2^79469640 is an apocalyptic number.

It is an amenable number.

79469640 is an abundant number, since it is smaller than the sum of its proper divisors (185432760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79469640 is a wasteful number, since it uses less digits than its factorization.

79469640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73603 (or 73593 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 79469640 is about 8914.5745832317. The cubic root of 79469640 is about 429.9326377262.

The spelling of 79469640 in words is "seventy-nine million, four hundred sixty-nine thousand, six hundred forty".