199473864 has 32 divisors (see below), whose sum is σ = 500327520. Its totient is φ = 66272256.

The previous prime is 199473851. The next prime is 199473893. The reversal of 199473864 is 468374991.

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, 6169 + ... + 20904.

It is an arithmetic number, because the mean of its divisors is an integer number (15635235).

Almost surely, 2^199473864 is an apocalyptic number.

It is an amenable number.

199473864 is an abundant number, since it is smaller than the sum of its proper divisors (300853656).

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

199473864 is a wasteful number, since it uses less digits than its factorization.

199473864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27389 (or 27385 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 199473864 is about 14123.5216571505. The cubic root of 199473864 is about 584.2902869720.

The spelling of 199473864 in words is "one hundred ninety-nine million, four hundred seventy-three thousand, eight hundred sixty-four".