86311444 has 6 divisors (see below), whose sum is σ = 151045034. Its totient is φ = 43155720.

The previous prime is 86311391. The next prime is 86311447. The reversal of 86311444 is 44411368.

It can be written as a sum of positive squares in only one way, i.e., 74615044 + 11696400 = 8638^2 + 3420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86311447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10788927 + ... + 10788934.

Almost surely, 2^86311444 is an apocalyptic number.

It is an amenable number.

86311444 is a deficient number, since it is larger than the sum of its proper divisors (64733590).

86311444 is a wasteful number, since it uses less digits than its factorization.

86311444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21577865 (or 21577863 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 86311444 is about 9290.3952553161. The cubic root of 86311444 is about 441.9326897358.

The spelling of 86311444 in words is "eighty-six million, three hundred eleven thousand, four hundred forty-four".