398750 has 40 divisors (see below), whose sum is σ = 843480. Its totient is φ = 140000.

The previous prime is 398731. The next prime is 398759. The reversal of 398750 is 57893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398759) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13736 + ... + 13764.

It is an arithmetic number, because the mean of its divisors is an integer number (21087).

2³⁹⁸⁷⁵⁰ is an apocalyptic number.

398750 is an abundant number, since it is smaller than the sum of its proper divisors (444730).

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

398750 is a wasteful number, since it uses less digits than its factorization.

398750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 398750 is about 631.4665470158. The cubic root of 398750 is about 73.6037992289.

The spelling of 398750 in words is "three hundred ninety-eight thousand, seven hundred fifty".