79638629404 has 12 divisors (see below), whose sum is σ = 139372676128. Its totient is φ = 39817864800.

The previous prime is 79638629401. The next prime is 79638629449. The reversal of 79638629404 is 40492683697.

It is a happy number.

It is a super-2 number, since 2×79638629404² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79638629401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233817 + ... + 462544.

Almost surely, 2^79638629404 is an apocalyptic number.

It is an amenable number.

79638629404 is a deficient number, since it is larger than the sum of its proper divisors (59734046724).

79638629404 is a wasteful number, since it uses less digits than its factorization.

79638629404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724956 (or 724954 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 79638629404 in words is "seventy-nine billion, six hundred thirty-eight million, six hundred twenty-nine thousand, four hundred four".