86018979 has 4 divisors (see below), whose sum is σ = 114691976. Its totient is φ = 57345984.

The previous prime is 86018953. The next prime is 86018981. The reversal of 86018979 is 97981068.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86018979 - 2⁹ = 86018467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86018579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14336494 + ... + 14336499.

It is an arithmetic number, because the mean of its divisors is an integer number (28672994).

Almost surely, 2^86018979 is an apocalyptic number.

86018979 is a deficient number, since it is larger than the sum of its proper divisors (28672997).

86018979 is a wasteful number, since it uses less digits than its factorization.

86018979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28672996.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 86018979 is about 9274.6417181474. The cubic root of 86018979 is about 441.4329641661.

The spelling of 86018979 in words is "eighty-six million, eighteen thousand, nine hundred seventy-nine".