199904734 has 16 divisors (see below), whose sum is σ = 318174048. Its totient is φ = 93871872.

The previous prime is 199904729. The next prime is 199904737. The reversal of 199904734 is 437409991.

It is a super-2 number, since 2×199904734² = 79923805351221512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199904737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10522 + ... + 22594.

It is an arithmetic number, because the mean of its divisors is an integer number (19885878).

Almost surely, 2^199904734 is an apocalyptic number.

199904734 is a deficient number, since it is larger than the sum of its proper divisors (118269314).

199904734 is a wasteful number, since it uses less digits than its factorization.

199904734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12579.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 199904734 is about 14138.7670608155. The cubic root of 199904734 is about 584.7106797378.

The spelling of 199904734 in words is "one hundred ninety-nine million, nine hundred four thousand, seven hundred thirty-four".