199979570 has 32 divisors (see below), whose sum is σ = 412622208. Its totient is φ = 68358528.

The previous prime is 199979569. The next prime is 199979581. The reversal of 199979570 is 75979991.

199979570 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20174 + ... + 28406.

It is an arithmetic number, because the mean of its divisors is an integer number (12894444).

Almost surely, 2^199979570 is an apocalyptic number.

199979570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199979570 is an abundant number, since it is smaller than the sum of its proper divisors (212642638).

199979570 is a wasteful number, since it uses less digits than its factorization.

199979570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8594.

The product of its (nonzero) digits is 1607445, while the sum is 56.

The square root of 199979570 is about 14141.4132957070. The cubic root of 199979570 is about 584.7836344037.

The spelling of 199979570 in words is "one hundred ninety-nine million, nine hundred seventy-nine thousand, five hundred seventy".