398831306802 has 32 divisors (see below), whose sum is σ = 846885341952. Its totient is φ = 124782599424.

The previous prime is 398831306801. The next prime is 398831306827. The reversal of 398831306802 is 208603138893.

It is a super-2 number, since 2×398831306802² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (398831306801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5289693 + ... + 5364560.

It is an arithmetic number, because the mean of its divisors is an integer number (26465166936).

Almost surely, 2^398831306802 is an apocalyptic number.

398831306802 is an abundant number, since it is smaller than the sum of its proper divisors (448054035150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398831306802 is a wasteful number, since it uses less digits than its factorization.

398831306802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10654642.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 398831306802 in words is "three hundred ninety-eight billion, eight hundred thirty-one million, three hundred six thousand, eight hundred two".