199838974 has 16 divisors (see below), whose sum is σ = 308076912. Its totient is φ = 97167168.

The previous prime is 199838963. The next prime is 199838981. The reversal of 199838974 is 479838991.

It is a happy number.

It is a congruent number.

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, 15052 + ... + 25024.

It is an arithmetic number, because the mean of its divisors is an integer number (19254807).

Almost surely, 2^199838974 is an apocalyptic number.

199838974 is a deficient number, since it is larger than the sum of its proper divisors (108237938).

199838974 is a wasteful number, since it uses less digits than its factorization.

199838974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10251.

The product of its digits is 3919104, while the sum is 58.

The square root of 199838974 is about 14136.4413485148. The cubic root of 199838974 is about 584.6465578759.

The spelling of 199838974 in words is "one hundred ninety-nine million, eight hundred thirty-eight thousand, nine hundred seventy-four".