403972 has 12 divisors (see below), whose sum is σ = 737856. Its totient is φ = 193160.

The previous prime is 403969. The next prime is 403979. The reversal of 403972 is 279304.

It is not an unprimeable number, because it can be changed into a prime (403979) 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, 2104 + ... + 2287.

It is an arithmetic number, because the mean of its divisors is an integer number (61488).

2⁴⁰³⁹⁷² is an apocalyptic number.

It is an amenable number.

403972 is a deficient number, since it is larger than the sum of its proper divisors (333884).

403972 is a wasteful number, since it uses less digits than its factorization.

403972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4418 (or 4416 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 403972 is about 635.5879168140. The cubic root of 403972 is about 73.9237100297.

The spelling of 403972 in words is "four hundred three thousand, nine hundred seventy-two".