86931277 has 4 divisors (see below), whose sum is σ = 86965216. Its totient is φ = 86897340.

The previous prime is 86931263. The next prime is 86931281. The reversal of 86931277 is 77213968.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86931277 - 2¹¹ = 86929229 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 (86931287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12783 + ... + 18364.

It is an arithmetic number, because the mean of its divisors is an integer number (21741304).

Almost surely, 2^86931277 is an apocalyptic number.

It is an amenable number.

86931277 is a deficient number, since it is larger than the sum of its proper divisors (33939).

86931277 is a wasteful number, since it uses less digits than its factorization.

86931277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33938.

The product of its digits is 127008, while the sum is 43.

The square root of 86931277 is about 9323.6943858108. The cubic root of 86931277 is about 442.9880590653.

The spelling of 86931277 in words is "eighty-six million, nine hundred thirty-one thousand, two hundred seventy-seven".