406904 has 16 divisors (see below), whose sum is σ = 803400. Its totient is φ = 192672.

The previous prime is 406883. The next prime is 406907. The reversal of 406904 is 409604.

406904 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 406904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406907) 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, 1187 + ... + 1490.

2⁴⁰⁶⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

406904 is a deficient number, since it is larger than the sum of its proper divisors (396496).

406904 is a wasteful number, since it uses less digits than its factorization.

406904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702 (or 2698 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 406904 is about 637.8902726959. The cubic root of 406904 is about 74.1021234267.

The spelling of 406904 in words is "four hundred six thousand, nine hundred four".