79912490 has 64 divisors (see below), whose sum is σ = 170311680. Its totient is φ = 26429760.

The previous prime is 79912471. The next prime is 79912517. The reversal of 79912490 is 9421997.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 418295 + ... + 418485.

It is an arithmetic number, because the mean of its divisors is an integer number (2661120).

Almost surely, 2^79912490 is an apocalyptic number.

79912490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

79912490 is an abundant number, since it is smaller than the sum of its proper divisors (90399190).

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

79912490 is a wasteful number, since it uses less digits than its factorization.

79912490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 79912490 is about 8939.3786137516. The cubic root of 79912490 is about 430.7297685347.

The spelling of 79912490 in words is "seventy-nine million, nine hundred twelve thousand, four hundred ninety".