398754 has 12 divisors (see below), whose sum is σ = 864006. Its totient is φ = 132912.

The previous prime is 398731. The next prime is 398759. The reversal of 398754 is 457893.

It can be written as a sum of positive squares in only one way, i.e., 393129 + 5625 = 627^2 + 75^2 .

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 398754.

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 5 ways as a sum of consecutive naturals, for example, 11059 + ... + 11094.

2³⁹⁸⁷⁵⁴ is an apocalyptic number.

398754 is an abundant number, since it is smaller than the sum of its proper divisors (465252).

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

398754 is a wasteful number, since it uses less digits than its factorization.

398754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22161 (or 22158 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 398754 is about 631.4697142381. The cubic root of 398754 is about 73.6040453432.

The spelling of 398754 in words is "three hundred ninety-eight thousand, seven hundred fifty-four".