77969190 has 32 divisors (see below), whose sum is σ = 201521376. Its totient is φ = 19192320.

The previous prime is 77969159. The next prime is 77969261. The reversal of 77969190 is 9196977.

It is a super-2 number, since 2×77969190² = 12158389178512200, 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 15 ways as a sum of consecutive naturals, for example, 99571 + ... + 100350.

It is an arithmetic number, because the mean of its divisors is an integer number (6297543).

Almost surely, 2^77969190 is an apocalyptic number.

77969190 is an abundant number, since it is smaller than the sum of its proper divisors (123552186).

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

77969190 is a wasteful number, since it uses less digits than its factorization.

77969190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199944.

The product of its (nonzero) digits is 214326, while the sum is 48.

The square root of 77969190 is about 8830.0164212758. The cubic root of 77969190 is about 427.2096040884.

The spelling of 77969190 in words is "seventy-seven million, nine hundred sixty-nine thousand, one hundred ninety".