199957384 has 32 divisors (see below), whose sum is σ = 410572800. Its totient is φ = 90541120.

The previous prime is 199957363. The next prime is 199957421. The reversal of 199957384 is 483759991.

It is a super-2 number, since 2×199957384² = 79965910832246912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19449 + ... + 27895.

It is an arithmetic number, because the mean of its divisors is an integer number (12830400).

Almost surely, 2^199957384 is an apocalyptic number.

It is an amenable number.

199957384 is an abundant number, since it is smaller than the sum of its proper divisors (210615416).

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

199957384 is a wasteful number, since it uses less digits than its factorization.

199957384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733 (or 8729 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 199957384 is about 14140.6288403310. The cubic root of 199957384 is about 584.7620080454.

The spelling of 199957384 in words is "one hundred ninety-nine million, nine hundred fifty-seven thousand, three hundred eighty-four".