398481 has 8 divisors (see below), whose sum is σ = 543840. Its totient is φ = 259392.

The previous prime is 398477. The next prime is 398491. The reversal of 398481 is 184893.

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

It is not a de Polignac number, because 398481 - 2² = 398477 is a prime.

It is a super-2 number, since 2×398481² = 317574214722, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 398481.

It is not an unprimeable number, because it can be changed into a prime (398441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1416 + ... + 1673.

It is an arithmetic number, because the mean of its divisors is an integer number (67980).

2³⁹⁸⁴⁸¹ is an apocalyptic number.

It is an amenable number.

398481 is a deficient number, since it is larger than the sum of its proper divisors (145359).

398481 is a wasteful number, since it uses less digits than its factorization.

398481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135.

The product of its digits is 6912, while the sum is 33.

The square root of 398481 is about 631.2535148417. The cubic root of 398481 is about 73.5872442647.

The spelling of 398481 in words is "three hundred ninety-eight thousand, four hundred eighty-one".