403916 has 12 divisors (see below), whose sum is σ = 711480. Its totient is φ = 200640.

The previous prime is 403901. The next prime is 403933. The reversal of 403916 is 619304.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 403891 and 403900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755 + ... + 1173.

It is an arithmetic number, because the mean of its divisors is an integer number (59290).

2⁴⁰³⁹¹⁶ is an apocalyptic number.

It is an amenable number.

403916 is a deficient number, since it is larger than the sum of its proper divisors (307564).

403916 is a wasteful number, since it uses less digits than its factorization.

403916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 403916 is about 635.5438615863. The cubic root of 403916 is about 73.9202940182.

The spelling of 403916 in words is "four hundred three thousand, nine hundred sixteen".