398433 has 8 divisors (see below), whose sum is σ = 607168. Its totient is φ = 227664.

The previous prime is 398423. The next prime is 398441. The reversal of 398433 is 334893.

It is a happy number.

398433 is nontrivially palindromic in base 8.

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

It is not a de Polignac number, because 398433 - 2⁴ = 398417 is a prime.

It is a Duffinian number.

It is a Curzon number.

398433 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 398433.

It is not an unprimeable number, because it can be changed into a prime (398423) 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, 9466 + ... + 9507.

It is an arithmetic number, because the mean of its divisors is an integer number (75896).

2³⁹⁸⁴³³ is an apocalyptic number.

It is an amenable number.

398433 is a deficient number, since it is larger than the sum of its proper divisors (208735).

398433 is a wasteful number, since it uses less digits than its factorization.

398433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18983.

The product of its digits is 7776, while the sum is 30.

The square root of 398433 is about 631.2154941064. The cubic root of 398433 is about 73.5842894357.

The spelling of 398433 in words is "three hundred ninety-eight thousand, four hundred thirty-three".