398701968 has 80 divisors (see below), whose sum is σ = 1187650176. Its totient is φ = 112896000.

The previous prime is 398701967. The next prime is 398701993. The reversal of 398701968 is 869107893.

It is a self number, because there is not a number n which added to its sum of digits gives 398701968.

It is not an unprimeable number, because it can be changed into a prime (398701967) 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, 32718 + ... + 43218.

Almost surely, 2^398701968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398701968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593825088).

398701968 is an abundant number, since it is smaller than the sum of its proper divisors (788948208).

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

398701968 is a wasteful number, since it uses less digits than its factorization.

398701968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10632 (or 10626 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 398701968 is about 19967.5228308371. The cubic root of 398701968 is about 736.0084376002.

The spelling of 398701968 in words is "three hundred ninety-eight million, seven hundred one thousand, nine hundred sixty-eight".