398237984 has 24 divisors (see below), whose sum is σ = 793482480. Its totient is φ = 196718656.

The previous prime is 398237981. The next prime is 398238013. The reversal of 398237984 is 489732893.

It is not an unprimeable number, because it can be changed into a prime (398237981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72314 + ... + 77625.

It is an arithmetic number, because the mean of its divisors is an integer number (33061770).

Almost surely, 2^398237984 is an apocalyptic number.

It is an amenable number.

398237984 is a deficient number, since it is larger than the sum of its proper divisors (395244496).

398237984 is a wasteful number, since it uses less digits than its factorization.

398237984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150032 (or 150024 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

The square root of 398237984 is about 19955.9009819151. The cubic root of 398237984 is about 735.7228201695.

The spelling of 398237984 in words is "three hundred ninety-eight million, two hundred thirty-seven thousand, nine hundred eighty-four".