199077139 has 2 divisors, whose sum is σ = 199077140. Its totient is φ = 199077138.

The previous prime is 199077127. The next prime is 199077149. The reversal of 199077139 is 931770991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199077139 - 2²⁷ = 64859411 is a prime.

It is not a weakly prime, because it can be changed into another prime (199077119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99538569 + 99538570.

It is an arithmetic number, because the mean of its divisors is an integer number (99538570).

Almost surely, 2^199077139 is an apocalyptic number.

199077139 is a deficient number, since it is larger than the sum of its proper divisors (1).

199077139 is an equidigital number, since it uses as much as digits as its factorization.

199077139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107163, while the sum is 46.

The square root of 199077139 is about 14109.4698341220. The cubic root of 199077139 is about 583.9026732708.

The spelling of 199077139 in words is "one hundred ninety-nine million, seventy-seven thousand, one hundred thirty-nine".