199613379 has 16 divisors (see below), whose sum is σ = 311592960. Its totient is φ = 111282240.

The previous prime is 199613377. The next prime is 199613387. The reversal of 199613379 is 973316991.

It is not a de Polignac number, because 199613379 - 2¹ = 199613377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199613377) 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, 115059 + ... + 116780.

It is an arithmetic number, because the mean of its divisors is an integer number (19474560).

Almost surely, 2^199613379 is an apocalyptic number.

199613379 is a deficient number, since it is larger than the sum of its proper divisors (111979581).

199613379 is a wasteful number, since it uses less digits than its factorization.

199613379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231890.

The product of its digits is 275562, while the sum is 48.

The square root of 199613379 is about 14128.4598948364. The cubic root of 199613379 is about 584.4264756775.

The spelling of 199613379 in words is "one hundred ninety-nine million, six hundred thirteen thousand, three hundred seventy-nine".