398750912 has 112 divisors (see below), whose sum is σ = 981626688. Its totient is φ = 156794880.

The previous prime is 398750903. The next prime is 398750921. The reversal of 398750912 is 219057893.

It is an interprime number because it is at equal distance from previous prime (398750903) and next prime (398750921).

It is a tau number, because it is divible by the number of its divisors (112).

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 15 ways as a sum of consecutive naturals, for example, 311618 + ... + 312894.

It is an arithmetic number, because the mean of its divisors is an integer number (8764524).

Almost surely, 2^398750912 is an apocalyptic number.

398750912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398750912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490813344).

398750912 is an abundant number, since it is smaller than the sum of its proper divisors (582875776).

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

398750912 is a wasteful number, since it uses less digits than its factorization.

398750912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 398750912 is about 19968.7483834115. The cubic root of 398750912 is about 736.0385534310.

The spelling of 398750912 in words is "three hundred ninety-eight million, seven hundred fifty thousand, nine hundred twelve".