398637947874 has 16 divisors (see below), whose sum is σ = 806234052960. Its totient is φ = 131386289760.

The previous prime is 398637947861. The next prime is 398637947899. The reversal of 398637947874 is 478749736893.

398637947874 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×398637947874² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 398637947796 and 398637947805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373255972 + ... + 373257039.

It is an arithmetic number, because the mean of its divisors is an integer number (50389628310).

Almost surely, 2^398637947874 is an apocalyptic number.

398637947874 is an abundant number, since it is smaller than the sum of its proper divisors (407596105086).

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

398637947874 is a wasteful number, since it uses less digits than its factorization.

398637947874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746513105.

The product of its digits is 1536288768, while the sum is 75.

The spelling of 398637947874 in words is "three hundred ninety-eight billion, six hundred thirty-seven million, nine hundred forty-seven thousand, eight hundred seventy-four".