86255979 has 16 divisors (see below), whose sum is σ = 118010112. Its totient is φ = 56010528.

The previous prime is 86255971. The next prime is 86255993. The reversal of 86255979 is 97955268.

It is a happy number.

It is not a de Polignac number, because 86255979 - 2³ = 86255971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86255971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62137 + ... + 63509.

It is an arithmetic number, because the mean of its divisors is an integer number (7375632).

Almost surely, 2^86255979 is an apocalyptic number.

86255979 is a deficient number, since it is larger than the sum of its proper divisors (31754133).

86255979 is a wasteful number, since it uses less digits than its factorization.

86255979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906.

The product of its digits is 1360800, while the sum is 51.

The square root of 86255979 is about 9287.4097034641. The cubic root of 86255979 is about 441.8380053080.

The spelling of 86255979 in words is "eighty-six million, two hundred fifty-five thousand, nine hundred seventy-nine".