398081 has 4 divisors (see below), whose sum is σ = 403200. Its totient is φ = 392964.

The previous prime is 398077. The next prime is 398087. The reversal of 398081 is 180893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180893 = 37 ⋅4889.

It is a cyclic number.

It is not a de Polignac number, because 398081 - 2² = 398077 is a prime.

It is a super-2 number, since 2×398081² = 316936965122, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398081.

It is not an unprimeable number, because it can be changed into a prime (398087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2441 + ... + 2598.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

2³⁹⁸⁰⁸¹ is an apocalyptic number.

It is an amenable number.

398081 is a deficient number, since it is larger than the sum of its proper divisors (5119).

398081 is an equidigital number, since it uses as much as digits as its factorization.

398081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 398081 is about 630.9366053733. The cubic root of 398081 is about 73.5626134356.

The spelling of 398081 in words is "three hundred ninety-eight thousand, eighty-one".