199574139 has 16 divisors (see below), whose sum is σ = 270043904. Its totient is φ = 131090400.

The previous prime is 199574083. The next prime is 199574209. The reversal of 199574139 is 931475991.

It is not a de Polignac number, because 199574139 - 2²⁰ = 198525563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199574239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63669 + ... + 66729.

It is an arithmetic number, because the mean of its divisors is an integer number (16877744).

Almost surely, 2^199574139 is an apocalyptic number.

199574139 is a deficient number, since it is larger than the sum of its proper divisors (70469765).

199574139 is a wasteful number, since it uses less digits than its factorization.

199574139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378.

The product of its digits is 306180, while the sum is 48.

The square root of 199574139 is about 14127.0711401904. The cubic root of 199574139 is about 584.3881776471.

The spelling of 199574139 in words is "one hundred ninety-nine million, five hundred seventy-four thousand, one hundred thirty-nine".