639460976094 has 48 divisors (see below), whose sum is σ = 1433430947520. Its totient is φ = 205781083200.

The previous prime is 639460976039. The next prime is 639460976137. The reversal of 639460976094 is 490679064936.

639460976094 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5106459 + ... + 5230185.

It is an arithmetic number, because the mean of its divisors is an integer number (29863144740).

Almost surely, 2^639460976094 is an apocalyptic number.

639460976094 is an abundant number, since it is smaller than the sum of its proper divisors (793969971426).

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

639460976094 is a wasteful number, since it uses less digits than its factorization.

639460976094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133665 (or 133662 counting only the distinct ones).

The product of its (nonzero) digits is 52907904, while the sum is 63.

The spelling of 639460976094 in words is "six hundred thirty-nine billion, four hundred sixty million, nine hundred seventy-six thousand, ninety-four".