6394907964 has 24 divisors (see below), whose sum is σ = 14938846720. Its totient is φ = 2129151024.

The previous prime is 6394907951. The next prime is 6394907999. The reversal of 6394907964 is 4697094936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299884 + ... + 320499.

Almost surely, 2^6394907964 is an apocalyptic number.

It is an amenable number.

6394907964 is an abundant number, since it is smaller than the sum of its proper divisors (8543938756).

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

6394907964 is a wasteful number, since it uses less digits than its factorization.

6394907964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621249 (or 621247 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 57.

The square root of 6394907964 is about 79968.1684421995. The cubic root of 6394907964 is about 1856.1430041016.

The spelling of 6394907964 in words is "six billion, three hundred ninety-four million, nine hundred seven thousand, nine hundred sixty-four".