400604 has 6 divisors (see below), whose sum is σ = 701064. Its totient is φ = 200300.

The previous prime is 400601. The next prime is 400607. The reversal of 400604 is 406004.

It is a happy number.

400604 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (400601) and next prime (400607).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50072 + ... + 50079.

It is an arithmetic number, because the mean of its divisors is an integer number (116844).

2⁴⁰⁰⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

400604 is a deficient number, since it is larger than the sum of its proper divisors (300460).

400604 is a wasteful number, since it uses less digits than its factorization.

400604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100155 (or 100153 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 400604 is about 632.9328558386. The cubic root of 400604 is about 73.7176972390.

Adding to 400604 its reverse (406004), we get a palindrome (806608).

The spelling of 400604 in words is "four hundred thousand, six hundred four".