199974562939 has 2 divisors, whose sum is σ = 199974562940. Its totient is φ = 199974562938.

The previous prime is 199974562901. The next prime is 199974562951. The reversal of 199974562939 is 939265479991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199974562939 - 2¹⁹ = 199974038651 is a prime.

It is not a weakly prime, because it can be changed into another prime (199974562999) 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, 99987281469 + 99987281470.

It is an arithmetic number, because the mean of its divisors is an integer number (99987281470).

Almost surely, 2^199974562939 is an apocalyptic number.

199974562939 is a deficient number, since it is larger than the sum of its proper divisors (1).

199974562939 is an equidigital number, since it uses as much as digits as its factorization.

199974562939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 297606960, while the sum is 73.

The spelling of 199974562939 in words is "one hundred ninety-nine billion, nine hundred seventy-four million, five hundred sixty-two thousand, nine hundred thirty-nine".