86979177 has 24 divisors (see below), whose sum is σ = 130734240. Its totient is φ = 57868020.

The previous prime is 86979083. The next prime is 86979209. The reversal of 86979177 is 77197968.

It is not a de Polignac number, because 86979177 - 2¹⁶ = 86913641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86979577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176902 + ... + 177392.

It is an arithmetic number, because the mean of its divisors is an integer number (5447260).

Almost surely, 2^86979177 is an apocalyptic number.

It is an amenable number.

86979177 is a deficient number, since it is larger than the sum of its proper divisors (43755063).

86979177 is an frugal number, since it uses more digits than its factorization.

86979177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 494 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 54.

The square root of 86979177 is about 9326.2627563242. The cubic root of 86979177 is about 443.0694077376.

The spelling of 86979177 in words is "eighty-six million, nine hundred seventy-nine thousand, one hundred seventy-seven".