408394 has 16 divisors (see below), whose sum is σ = 723456. Its totient is φ = 169200.

The previous prime is 408389. The next prime is 408403. The reversal of 408394 is 493804.

408394 = 107² + 108² + ... + 134².

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37 + ... + 904.

It is an arithmetic number, because the mean of its divisors is an integer number (45216).

2⁴⁰⁸³⁹⁴ is an apocalyptic number.

408394 is a deficient number, since it is larger than the sum of its proper divisors (315062).

408394 is a wasteful number, since it uses less digits than its factorization.

408394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 408394 is about 639.0571179480. The cubic root of 408394 is about 74.1924622359.

The spelling of 408394 in words is "four hundred eight thousand, three hundred ninety-four".