86440475464 has 40 divisors (see below), whose sum is σ = 189077331510. Its totient is φ = 37045909824.

The previous prime is 86440475447. The next prime is 86440475497. The reversal of 86440475464 is 46457404468.

It can be written as a sum of positive squares in only one way, i.e., 85230131364 + 1210344100 = 291942^2 + 34790^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2230909 + ... + 2269324.

Almost surely, 2^86440475464 is an apocalyptic number.

It is an amenable number.

86440475464 is an abundant number, since it is smaller than the sum of its proper divisors (102636856046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86440475464 is an equidigital number, since it uses as much as digits as its factorization.

86440475464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500267 (or 4500242 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 52.

The spelling of 86440475464 in words is "eighty-six billion, four hundred forty million, four hundred seventy-five thousand, four hundred sixty-four".