86139496 has 8 divisors (see below), whose sum is σ = 161511570. Its totient is φ = 43069744.

The previous prime is 86139491. The next prime is 86139509. The reversal of 86139496 is 69493168.

It can be written as a sum of positive squares in only one way, i.e., 75446596 + 10692900 = 8686^2 + 3270^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×86139496² = 14840025542268032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86139491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5383711 + ... + 5383726.

Almost surely, 2^86139496 is an apocalyptic number.

It is an amenable number.

86139496 is a deficient number, since it is larger than the sum of its proper divisors (75372074).

86139496 is a wasteful number, since it uses less digits than its factorization.

86139496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767443 (or 10767439 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 86139496 is about 9281.1365683304. The cubic root of 86139496 is about 441.6390247010.

The spelling of 86139496 in words is "eighty-six million, one hundred thirty-nine thousand, four hundred ninety-six".