398879411804 has 24 divisors (see below), whose sum is σ = 764586300240. Its totient is φ = 181235269376.

The previous prime is 398879411789. The next prime is 398879411809. The reversal of 398879411804 is 408114978893.

It is a happy number.

It is a super-2 number, since 2×398879411804² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398879411809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101133782 + ... + 101137725.

It is an arithmetic number, because the mean of its divisors is an integer number (31857762510).

Almost surely, 2^398879411804 is an apocalyptic number.

398879411804 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

398879411804 is a deficient number, since it is larger than the sum of its proper divisors (365706888436).

398879411804 is a wasteful number, since it uses less digits than its factorization.

398879411804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202271557 (or 202271555 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 62.

The spelling of 398879411804 in words is "three hundred ninety-eight billion, eight hundred seventy-nine million, four hundred eleven thousand, eight hundred four".