398454 has 32 divisors (see below), whose sum is σ = 933120. Its totient is φ = 111072.

The previous prime is 398441. The next prime is 398459. The reversal of 398454 is 454893.

It is a super-3 number, since 3×398454³ = 189782353332241992, which contains 333 as substring.

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 398454.

It is not an unprimeable number, because it can be changed into a prime (398459) by changing a digit.

398454 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2137 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2³⁹⁸⁴⁵⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466560).

398454 is an abundant number, since it is smaller than the sum of its proper divisors (534666).

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

398454 is a wasteful number, since it uses less digits than its factorization.

398454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244.

The product of its digits is 17280, while the sum is 33.

The square root of 398454 is about 631.2321284599. The cubic root of 398454 is about 73.5855822026.

The spelling of 398454 in words is "three hundred ninety-eight thousand, four hundred fifty-four".