398882805613 has 4 divisors (see below), whose sum is σ = 399076158528. Its totient is φ = 398689452700.

The previous prime is 398882805593. The next prime is 398882805623. The reversal of 398882805613 is 316508288893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 398882805613 - 2¹³ = 398882797421 is a prime.

It is a super-2 number, since 2×398882805613² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398882805623) 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, 96673363 + ... + 96677488.

It is an arithmetic number, because the mean of its divisors is an integer number (99769039632).

Almost surely, 2^398882805613 is an apocalyptic number.

It is an amenable number.

398882805613 is a deficient number, since it is larger than the sum of its proper divisors (193352915).

398882805613 is a wasteful number, since it uses less digits than its factorization.

398882805613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193352914.

The product of its (nonzero) digits is 19906560, while the sum is 61.

The spelling of 398882805613 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, eight hundred five thousand, six hundred thirteen".