86831793 has 12 divisors (see below), whose sum is σ = 127191168. Its totient is φ = 57072120.

The previous prime is 86831779. The next prime is 86831803. The reversal of 86831793 is 39713868.

It is a happy number.

It is not a de Polignac number, because 86831793 - 2⁹ = 86831281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86831743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67305 + ... + 68582.

It is an arithmetic number, because the mean of its divisors is an integer number (10599264).

Almost surely, 2^86831793 is an apocalyptic number.

It is an amenable number.

86831793 is a deficient number, since it is larger than the sum of its proper divisors (40359375).

86831793 is a wasteful number, since it uses less digits than its factorization.

86831793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135964 (or 135961 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 86831793 is about 9318.3578488916. The cubic root of 86831793 is about 442.8190096445.

The spelling of 86831793 in words is "eighty-six million, eight hundred thirty-one thousand, seven hundred ninety-three".