398716876799 has 4 divisors (see below), whose sum is σ = 398718269520. Its totient is φ = 398715484080.

The previous prime is 398716876777. The next prime is 398716876807. The reversal of 398716876799 is 997678617893.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 398716876799 - 2¹² = 398716872703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398716876739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92219 + ... + 897740.

It is an arithmetic number, because the mean of its divisors is an integer number (99679567380).

Almost surely, 2^398716876799 is an apocalyptic number.

398716876799 is a deficient number, since it is larger than the sum of its proper divisors (1392721).

398716876799 is an equidigital number, since it uses as much as digits as its factorization.

398716876799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392720.

The product of its digits is 1728324864, while the sum is 80.

The spelling of 398716876799 in words is "three hundred ninety-eight billion, seven hundred sixteen million, eight hundred seventy-six thousand, seven hundred ninety-nine".