399348579139 has 2 divisors, whose sum is σ = 399348579140. Its totient is φ = 399348579138.

The previous prime is 399348579131. The next prime is 399348579151. The reversal of 399348579139 is 931975843993.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 399348579139 - 2³ = 399348579131 is a prime.

It is not a weakly prime, because it can be changed into another prime (399348579131) 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, 199674289569 + 199674289570.

It is an arithmetic number, because the mean of its divisors is an integer number (199674289570).

Almost surely, 2^399348579139 is an apocalyptic number.

399348579139 is a deficient number, since it is larger than the sum of its proper divisors (1).

399348579139 is an equidigital number, since it uses as much as digits as its factorization.

399348579139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 198404640, while the sum is 70.

The spelling of 399348579139 in words is "three hundred ninety-nine billion, three hundred forty-eight million, five hundred seventy-nine thousand, one hundred thirty-nine".