6400090907 has 8 divisors (see below), whose sum is σ = 7402515456. Its totient is φ = 5419697832.

The previous prime is 6400090877. The next prime is 6400090933. The reversal of 6400090907 is 7090900046.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6400090907 - 2¹² = 6400086811 is a prime.

It is a super-2 number, since 2×6400090907² = 81922327235728165298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6400090987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5507243 + ... + 5508404.

It is an arithmetic number, because the mean of its divisors is an integer number (925314432).

Almost surely, 2^6400090907 is an apocalyptic number.

6400090907 is a deficient number, since it is larger than the sum of its proper divisors (1002424549).

6400090907 is a wasteful number, since it uses less digits than its factorization.

6400090907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11015737.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 6400090907 is about 80000.5681667324. The cubic root of 6400090907 is about 1856.6443240892.

The spelling of 6400090907 in words is "six billion, four hundred million, ninety thousand, nine hundred seven".