406398 has 8 divisors (see below), whose sum is σ = 812808. Its totient is φ = 135464.

The previous prime is 406397. The next prime is 406403. The reversal of 406398 is 893604.

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

406398 is an admirable 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 406398.

It is not an unprimeable number, because it can be changed into a prime (406397) 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, 33861 + ... + 33872.

It is an arithmetic number, because the mean of its divisors is an integer number (101601).

2⁴⁰⁶³⁹⁸ is an apocalyptic number.

406398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

406398 is a wasteful number, since it uses less digits than its factorization.

406398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67738.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 406398 is about 637.4935293789. The cubic root of 406398 is about 74.0713944524.

The spelling of 406398 in words is "four hundred six thousand, three hundred ninety-eight".