398397 has 12 divisors (see below), whose sum is σ = 551360. Its totient is φ = 255840.

The previous prime is 398393. The next prime is 398407. The reversal of 398397 is 793893.

It is a happy number.

It is not a de Polignac number, because 398397 - 2² = 398393 is a prime.

It is a Duffinian number.

398397 is a lucky number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398393) 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, 5004 + ... + 5082.

2³⁹⁸³⁹⁷ is an apocalyptic number.

It is an amenable number.

398397 is a deficient number, since it is larger than the sum of its proper divisors (152963).

398397 is an equidigital number, since it uses as much as digits as its factorization.

398397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 123 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 398397 is about 631.1869770520. The cubic root of 398397 is about 73.5820731583.

The spelling of 398397 in words is "three hundred ninety-eight thousand, three hundred ninety-seven".