402908 has 12 divisors (see below), whose sum is σ = 769272. Its totient is φ = 183120.

The previous prime is 402881. The next prime is 402923. The reversal of 402908 is 809204.

402908 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

402908 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 3 ways as a sum of consecutive naturals, for example, 4535 + ... + 4622.

It is an arithmetic number, because the mean of its divisors is an integer number (64106).

2⁴⁰²⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

402908 is a deficient number, since it is larger than the sum of its proper divisors (366364).

402908 is a wasteful number, since it uses less digits than its factorization.

402908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9172 (or 9170 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 402908 is about 634.7503446238. The cubic root of 402908 is about 73.8587517458.

The spelling of 402908 in words is "four hundred two thousand, nine hundred eight".