78979190 has 16 divisors (see below), whose sum is σ = 142270128. Its totient is φ = 31567776.

The previous prime is 78979189. The next prime is 78979237. The reversal of 78979190 is 9197987.

It is a super-2 number, since 2×78979190² = 12475424906112200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17729 + ... + 21731.

It is an arithmetic number, because the mean of its divisors is an integer number (8891883).

Almost surely, 2^78979190 is an apocalyptic number.

78979190 is a deficient number, since it is larger than the sum of its proper divisors (63290938).

78979190 is a wasteful number, since it uses less digits than its factorization.

78979190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5983.

The product of its (nonzero) digits is 285768, while the sum is 50.

The square root of 78979190 is about 8887.0236862518. The cubic root of 78979190 is about 429.0463632803.

The spelling of 78979190 in words is "seventy-eight million, nine hundred seventy-nine thousand, one hundred ninety".