398882804959 has 4 divisors (see below), whose sum is σ = 400971196800. Its totient is φ = 396794413120.

The previous prime is 398882804939. The next prime is 398882804963. The reversal of 398882804959 is 959408288893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959408288893 = 71671 ⋅13386283.

It is a cyclic number.

It is not a de Polignac number, because 398882804959 - 2¹⁵ = 398882772191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398882804891 and 398882804900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398882804909) 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 in 3 ways as a sum of consecutive naturals, for example, 1044195634 + ... + 1044196015.

It is an arithmetic number, because the mean of its divisors is an integer number (100242799200).

Almost surely, 2^398882804959 is an apocalyptic number.

398882804959 is a deficient number, since it is larger than the sum of its proper divisors (2088391841).

398882804959 is a wasteful number, since it uses less digits than its factorization.

398882804959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088391840.

The product of its (nonzero) digits is 358318080, while the sum is 73.

The spelling of 398882804959 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, eight hundred four thousand, nine hundred fifty-nine".