79829890 has 32 divisors (see below), whose sum is σ = 164545920. Its totient is φ = 27316224.

The previous prime is 79829881. The next prime is 79829917. The reversal of 79829890 is 9892897.

It is a super-2 number, since 2×79829890² = 12745622674824200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53089 + ... + 54571.

It is an arithmetic number, because the mean of its divisors is an integer number (5142060).

Almost surely, 2^79829890 is an apocalyptic number.

79829890 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

79829890 is an abundant number, since it is smaller than the sum of its proper divisors (84716030).

79829890 is a wasteful number, since it uses less digits than its factorization.

79829890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 79829890 is about 8934.7574113683. The cubic root of 79829890 is about 430.5813122080.

The spelling of 79829890 in words is "seventy-nine million, eight hundred twenty-nine thousand, eight hundred ninety".