398203968 has 56 divisors (see below), whose sum is σ = 1099401408. Its totient is φ = 126962176.

The previous prime is 398203933. The next prime is 398203987. The reversal of 398203968 is 869302893.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 40671 + ... + 49502.

It is an arithmetic number, because the mean of its divisors is an integer number (19632168).

Almost surely, 2^398203968 is an apocalyptic number.

It is an amenable number.

398203968 is an abundant number, since it is smaller than the sum of its proper divisors (701197440).

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

398203968 is a wasteful number, since it uses less digits than its factorization.

398203968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90211 (or 90201 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 398203968 is about 19955.0486844808. The cubic root of 398203968 is about 735.7018720087.

It can be divided in two parts, 398203 and 968, that added together give a triangular number (399171 = T₈₉₃).

The spelling of 398203968 in words is "three hundred ninety-eight million, two hundred three thousand, nine hundred sixty-eight".