199444972 has 6 divisors (see below), whose sum is σ = 349028708. Its totient is φ = 99722484.

The previous prime is 199444913. The next prime is 199445009. The reversal of 199444972 is 279444991.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24930618 + ... + 24930625.

Almost surely, 2^199444972 is an apocalyptic number.

It is an amenable number.

199444972 is a deficient number, since it is larger than the sum of its proper divisors (149583736).

199444972 is a wasteful number, since it uses less digits than its factorization.

199444972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49861247 (or 49861245 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 199444972 is about 14122.4987873959. The cubic root of 199444972 is about 584.2620758742.

The spelling of 199444972 in words is "one hundred ninety-nine million, four hundred forty-four thousand, nine hundred seventy-two".