403980 has 24 divisors (see below), whose sum is σ = 1131312. Its totient is φ = 107712.

The previous prime is 403979. The next prime is 403981. The reversal of 403980 is 89304.

403980 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (403979) and next prime (403981).

It is a self number, because there is not a number n which added to its sum of digits gives 403980.

It is not an unprimeable number, because it can be changed into a prime (403981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3307 + ... + 3426.

It is an arithmetic number, because the mean of its divisors is an integer number (47138).

2⁴⁰³⁹⁸⁰ is an apocalyptic number.

It is an amenable number.

403980 is an abundant number, since it is smaller than the sum of its proper divisors (727332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403980 is a wasteful number, since it uses less digits than its factorization.

403980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6745 (or 6743 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 403980 is about 635.5942101687. The cubic root of 403980 is about 73.9241980056.

The spelling of 403980 in words is "four hundred three thousand, nine hundred eighty".