79694040 has 32 divisors (see below), whose sum is σ = 239082480. Its totient is φ = 21251712.

The previous prime is 79694039. The next prime is 79694047. The reversal of 79694040 is 4049697.

It is a super-2 number, since 2×79694040² = 12702280023043200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 79694040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79694047) 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, 331939 + ... + 332178.

Almost surely, 2^79694040 is an apocalyptic number.

It is an amenable number.

79694040 is an abundant number, since it is smaller than the sum of its proper divisors (159388440).

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

79694040 is a wasteful number, since it uses less digits than its factorization.

79694040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664131 (or 664127 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 79694040 is about 8927.1518414330. The cubic root of 79694040 is about 430.3369272057.

The spelling of 79694040 in words is "seventy-nine million, six hundred ninety-four thousand, forty".