398889611574 has 16 divisors (see below), whose sum is σ = 799830074160. Its totient is φ = 132621395360.

The previous prime is 398889611551. The next prime is 398889611587. The reversal of 398889611574 is 475116988893.

It is a super-2 number, since 2×398889611574² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 398889611499 and 398889611508.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 85449597 + ... + 85454264.

It is an arithmetic number, because the mean of its divisors is an integer number (49989379635).

Almost surely, 2^398889611574 is an apocalyptic number.

398889611574 is an abundant number, since it is smaller than the sum of its proper divisors (400940462586).

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

398889611574 is a wasteful number, since it uses less digits than its factorization.

398889611574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170904255.

The product of its digits is 104509440, while the sum is 69.

The spelling of 398889611574 in words is "three hundred ninety-eight billion, eight hundred eighty-nine million, six hundred eleven thousand, five hundred seventy-four".