79908490 has 16 divisors (see below), whose sum is σ = 151405920. Its totient is φ = 30281040.

The previous prime is 79908487. The next prime is 79908497. The reversal of 79908490 is 9480997.

It is a self number, because there is not a number n which added to its sum of digits gives 79908490.

It is not an unprimeable number, because it can be changed into a prime (79908497) 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, 210096 + ... + 210475.

It is an arithmetic number, because the mean of its divisors is an integer number (9462870).

Almost surely, 2^79908490 is an apocalyptic number.

79908490 is a deficient number, since it is larger than the sum of its proper divisors (71497430).

79908490 is a wasteful number, since it uses less digits than its factorization.

79908490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420597.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 79908490 is about 8939.1548817548. The cubic root of 79908490 is about 430.7225817240.

The spelling of 79908490 in words is "seventy-nine million, nine hundred eight thousand, four hundred ninety".