199434133979 has 2 divisors, whose sum is σ = 199434133980. Its totient is φ = 199434133978.

The previous prime is 199434133963. The next prime is 199434133993. The reversal of 199434133979 is 979331434991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199434133979 - 2⁴ = 199434133963 is a prime.

It is not a weakly prime, because it can be changed into another prime (199434133909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99717066989 + 99717066990.

It is an arithmetic number, because the mean of its divisors is an integer number (99717066990).

Almost surely, 2^199434133979 is an apocalyptic number.

199434133979 is a deficient number, since it is larger than the sum of its proper divisors (1).

199434133979 is an equidigital number, since it uses as much as digits as its factorization.

199434133979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19840464, while the sum is 62.

The spelling of 199434133979 in words is "one hundred ninety-nine billion, four hundred thirty-four million, one hundred thirty-three thousand, nine hundred seventy-nine".