398675576939 has 2 divisors, whose sum is σ = 398675576940. Its totient is φ = 398675576938.

The previous prime is 398675576851. The next prime is 398675576977. The reversal of 398675576939 is 939675576893.

It is a strong prime.

It is an emirp because it is prime and its reverse (939675576893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398675576939 - 2¹² = 398675572843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398675576939.

It is not a weakly prime, because it can be changed into another prime (398675536939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199337788469 + 199337788470.

It is an arithmetic number, because the mean of its divisors is an integer number (199337788470).

Almost surely, 2^398675576939 is an apocalyptic number.

398675576939 is a deficient number, since it is larger than the sum of its proper divisors (1).

398675576939 is an equidigital number, since it uses as much as digits as its factorization.

398675576939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2314720800, while the sum is 77.

The spelling of 398675576939 in words is "three hundred ninety-eight billion, six hundred seventy-five million, five hundred seventy-six thousand, nine hundred thirty-nine".