86371913 has 4 divisors (see below), whose sum is σ = 87787908. Its totient is φ = 84955920.

The previous prime is 86371903. The next prime is 86371931. The reversal of 86371913 is 31917368.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30824704 + 55547209 = 5552^2 + 7453^2 .

It is not a de Polignac number, because 86371913 - 2¹² = 86367817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86371903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707906 + ... + 708027.

It is an arithmetic number, because the mean of its divisors is an integer number (21946977).

Almost surely, 2^86371913 is an apocalyptic number.

It is an amenable number.

86371913 is a deficient number, since it is larger than the sum of its proper divisors (1415995).

86371913 is a wasteful number, since it uses less digits than its factorization.

86371913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415994.

The product of its digits is 27216, while the sum is 38.

The square root of 86371913 is about 9293.6490680464. The cubic root of 86371913 is about 442.0358702965.

The spelling of 86371913 in words is "eighty-six million, three hundred seventy-one thousand, nine hundred thirteen".