438998129900 has 36 divisors (see below), whose sum is σ = 1039228302840. Its totient is φ = 159635683200.

The previous prime is 438998129881. The next prime is 438998129923. The reversal of 438998129900 is 9921899834.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199543505 + ... + 199545704.

Almost surely, 2^438998129900 is an apocalyptic number.

It is an amenable number.

438998129900 is an abundant number, since it is smaller than the sum of its proper divisors (600230172940).

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

438998129900 is a wasteful number, since it uses less digits than its factorization.

438998129900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399089234 (or 399089227 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 62.

The spelling of 438998129900 in words is "four hundred thirty-eight billion, nine hundred ninety-eight million, one hundred twenty-nine thousand, nine hundred".