86679169 has 2 divisors, whose sum is σ = 86679170. Its totient is φ = 86679168.

The previous prime is 86679133. The next prime is 86679181. The reversal of 86679169 is 96197668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85655025 + 1024144 = 9255^2 + 1012^2 .

It is a cyclic number.

It is not a de Polignac number, because 86679169 - 2⁷ = 86679041 is a prime.

It is a super-2 number, since 2×86679169² = 15026556677061122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86649169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43339584 + 43339585.

It is an arithmetic number, because the mean of its divisors is an integer number (43339585).

Almost surely, 2^86679169 is an apocalyptic number.

It is an amenable number.

86679169 is a deficient number, since it is larger than the sum of its proper divisors (1).

86679169 is an equidigital number, since it uses as much as digits as its factorization.

86679169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 52.

The square root of 86679169 is about 9310.1648213122. The cubic root of 86679169 is about 442.5594102406.

The spelling of 86679169 in words is "eighty-six million, six hundred seventy-nine thousand, one hundred sixty-nine".