398877581384 has 64 divisors (see below), whose sum is σ = 778501601280. Its totient is φ = 191489760000.

The previous prime is 398877581371. The next prime is 398877581387. The reversal of 398877581384 is 483185778893.

It is a Harshad number since it is a multiple of its sum of digits (71).

It is not an unprimeable number, because it can be changed into a prime (398877581387) 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, 3442457 + ... + 3556439.

It is an arithmetic number, because the mean of its divisors is an integer number (12164087520).

Almost surely, 2^398877581384 is an apocalyptic number.

It is an amenable number.

398877581384 is a deficient number, since it is larger than the sum of its proper divisors (379624019896).

398877581384 is a wasteful number, since it uses less digits than its factorization.

398877581384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114222 (or 114218 counting only the distinct ones).

The product of its digits is 325140480, while the sum is 71.

The spelling of 398877581384 in words is "three hundred ninety-eight billion, eight hundred seventy-seven million, five hundred eighty-one thousand, three hundred eighty-four".