398850 has 24 divisors (see below), whose sum is σ = 989520. Its totient is φ = 106320.

The previous prime is 398833. The next prime is 398857. The reversal of 398850 is 58893.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398850.

It is not an unprimeable number, because it can be changed into a prime (398857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1180 + ... + 1479.

It is an arithmetic number, because the mean of its divisors is an integer number (41230).

2³⁹⁸⁸⁵⁰ is an apocalyptic number.

398850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

398850 is an abundant number, since it is smaller than the sum of its proper divisors (590670).

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

398850 is a wasteful number, since it uses less digits than its factorization.

398850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674 (or 2669 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 398850 is about 631.5457228103. The cubic root of 398850 is about 73.6099515923.

The spelling of 398850 in words is "three hundred ninety-eight thousand, eight hundred fifty".