398526 has 16 divisors (see below), whose sum is σ = 804864. Its totient is φ = 131544.

The previous prime is 398509. The next prime is 398539. The reversal of 398526 is 625893.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501 + ... + 1023.

It is an arithmetic number, because the mean of its divisors is an integer number (50304).

2³⁹⁸⁵²⁶ is an apocalyptic number.

398526 is an abundant number, since it is smaller than the sum of its proper divisors (406338).

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

398526 is a wasteful number, since it uses less digits than its factorization.

398526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655.

The product of its digits is 12960, while the sum is 33.

The square root of 398526 is about 631.2891572014. The cubic root of 398526 is about 73.5900142013.

The spelling of 398526 in words is "three hundred ninety-eight thousand, five hundred twenty-six".