398381 has 8 divisors (see below), whose sum is σ = 419328. Its totient is φ = 378000.

The previous prime is 398369. The next prime is 398393. The reversal of 398381 is 183893.

It is an interprime number because it is at equal distance from previous prime (398369) and next prime (398393).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398381 - 2¹⁰ = 397357 is a prime.

It is a super-2 number, since 2×398381² = 317414842322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398381.

It is not an unprimeable number, because it can be changed into a prime (398311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2111 + ... + 2291.

It is an arithmetic number, because the mean of its divisors is an integer number (52416).

2³⁹⁸³⁸¹ is an apocalyptic number.

398381 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

398381 is a deficient number, since it is larger than the sum of its proper divisors (20947).

398381 is a wasteful number, since it uses less digits than its factorization.

398381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283.

The product of its digits is 5184, while the sum is 32.

The square root of 398381 is about 631.1743023920. The cubic root of 398381 is about 73.5810881033.

The spelling of 398381 in words is "three hundred ninety-eight thousand, three hundred eighty-one".