398004 has 24 divisors (see below), whose sum is σ = 983808. Its totient is φ = 124800.

The previous prime is 397981. The next prime is 398011. The reversal of 398004 is 400893.

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, 772 + ... + 1179.

It is an arithmetic number, because the mean of its divisors is an integer number (40992).

2³⁹⁸⁰⁰⁴ is an apocalyptic number.

398004 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

398004 is an abundant number, since it is smaller than the sum of its proper divisors (585804).

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

398004 is a wasteful number, since it uses less digits than its factorization.

398004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975 (or 1973 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 398004 is about 630.8755820287. The cubic root of 398004 is about 73.5578701074.

Adding to 398004 its reverse (400893), we get a palindrome (798897).

The spelling of 398004 in words is "three hundred ninety-eight thousand, four".