398878837046 has 8 divisors (see below), whose sum is σ = 602685542520. Its totient is φ = 197983656208.

The previous prime is 398878837031. The next prime is 398878837067. The reversal of 398878837046 is 640738878893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×398878837046² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727880816 + ... + 727881363.

It is an arithmetic number, because the mean of its divisors is an integer number (75335692815).

Almost surely, 2^398878837046 is an apocalyptic number.

398878837046 is a deficient number, since it is larger than the sum of its proper divisors (203806705474).

398878837046 is a wasteful number, since it uses less digits than its factorization.

398878837046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455762318.

The product of its (nonzero) digits is 390168576, while the sum is 71.

The spelling of 398878837046 in words is "three hundred ninety-eight billion, eight hundred seventy-eight million, eight hundred thirty-seven thousand, forty-six".