199487944 has 16 divisors (see below), whose sum is σ = 379623600. Its totient is φ = 98254992.

The previous prime is 199487933. The next prime is 199487971. The reversal of 199487944 is 449784991.

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, 185554 + ... + 186625.

It is an arithmetic number, because the mean of its divisors is an integer number (23726475).

Almost surely, 2^199487944 is an apocalyptic number.

It is an amenable number.

199487944 is a deficient number, since it is larger than the sum of its proper divisors (180135656).

199487944 is a wasteful number, since it uses less digits than its factorization.

199487944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372252 (or 372248 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 199487944 is about 14124.0201076039. The cubic root of 199487944 is about 584.3040341593.

The spelling of 199487944 in words is "one hundred ninety-nine million, four hundred eighty-seven thousand, nine hundred forty-four".