77109193 has 12 divisors (see below), whose sum is σ = 90412032. Its totient is φ = 65567880.

The previous prime is 77109169. The next prime is 77109247. The reversal of 77109193 is 39190177.

It is not a de Polignac number, because 77109193 - 2²⁵ = 43554761 is a prime.

It is a super-2 number, since 2×77109193² = 11891655290222498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77109113) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 28 + ... + 12418.

It is an arithmetic number, because the mean of its divisors is an integer number (7534336).

Almost surely, 2^77109193 is an apocalyptic number.

It is an amenable number.

77109193 is a deficient number, since it is larger than the sum of its proper divisors (13302839).

77109193 is a wasteful number, since it uses less digits than its factorization.

77109193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12532 (or 12525 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 77109193 is about 8781.1840317807. The cubic root of 77109193 is about 425.6330919848.

The spelling of 77109193 in words is "seventy-seven million, one hundred nine thousand, one hundred ninety-three".