199549974 has 16 divisors (see below), whose sum is σ = 429800112. Its totient is φ = 61399968.

The previous prime is 199549939. The next prime is 199549997. The reversal of 199549974 is 479945991.

199549974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 1279089 + ... + 1279244.

It is an arithmetic number, because the mean of its divisors is an integer number (26862507).

Almost surely, 2^199549974 is an apocalyptic number.

199549974 is an abundant number, since it is smaller than the sum of its proper divisors (230250138).

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

199549974 is a wasteful number, since it uses less digits than its factorization.

199549974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558351.

The product of its digits is 3674160, while the sum is 57.

The square root of 199549974 is about 14126.2158414772. The cubic root of 199549974 is about 584.3645902385.

The spelling of 199549974 in words is "one hundred ninety-nine million, five hundred forty-nine thousand, nine hundred seventy-four".