6442898988 has 12 divisors (see below), whose sum is σ = 15033431000. Its totient is φ = 2147632992.

The previous prime is 6442898933. The next prime is 6442899053. The reversal of 6442898988 is 8898982446.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268454113 + ... + 268454136.

Almost surely, 2^6442898988 is an apocalyptic number.

It is an amenable number.

6442898988 is an abundant number, since it is smaller than the sum of its proper divisors (8590532012).

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

6442898988 is a wasteful number, since it uses less digits than its factorization.

6442898988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536908256 (or 536908254 counting only the distinct ones).

The product of its digits is 63700992, while the sum is 66.

The square root of 6442898988 is about 80267.6708768854. The cubic root of 6442898988 is about 1860.7746212782.

The spelling of 6442898988 in words is "six billion, four hundred forty-two million, eight hundred ninety-eight thousand, nine hundred eighty-eight".