76931109 has 6 divisors (see below), whose sum is σ = 111122726. Its totient is φ = 51287400.

The previous prime is 76931093. The next prime is 76931111. The reversal of 76931109 is 90113967.

It can be written as a sum of positive squares in only one way, i.e., 74909025 + 2022084 = 8655^2 + 1422^2 .

It is not a de Polignac number, because 76931109 - 2⁴ = 76931093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76931149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4273942 + ... + 4273959.

Almost surely, 2^76931109 is an apocalyptic number.

It is an amenable number.

76931109 is a deficient number, since it is larger than the sum of its proper divisors (34191617).

76931109 is a wasteful number, since it uses less digits than its factorization.

76931109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8547907 (or 8547904 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 76931109 is about 8771.0380799538. The cubic root of 76931109 is about 425.3051722827.

It can be divided in two parts, 769 and 31109, that added together give a triangular number (31878 = T₂₅₂).

The spelling of 76931109 in words is "seventy-six million, nine hundred thirty-one thousand, one hundred nine".