79401637 has 12 divisors (see below), whose sum is σ = 91513120. Its totient is φ = 67486608.

The previous prime is 79401613. The next prime is 79401671. The reversal of 79401637 is 73610497.

It is not a de Polignac number, because 79401637 - 2¹⁹ = 78877349 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79401596 and 79401605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79401677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209314 + ... + 209692.

Almost surely, 2^79401637 is an apocalyptic number.

It is an amenable number.

79401637 is a deficient number, since it is larger than the sum of its proper divisors (12111483).

79401637 is an equidigital number, since it uses as much as digits as its factorization.

79401637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 79401637 is about 8910.7596196957. The cubic root of 79401637 is about 429.8099701158.

The spelling of 79401637 in words is "seventy-nine million, four hundred one thousand, six hundred thirty-seven".