403980804 has 48 divisors (see below), whose sum is σ = 1053259200. Its totient is φ = 133901568.

The previous prime is 403980803. The next prime is 403980821. The reversal of 403980804 is 408089304.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (403980803) 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 15 ways as a sum of consecutive naturals, for example, 8884 + ... + 29780.

It is an arithmetic number, because the mean of its divisors is an integer number (21942900).

Almost surely, 2^403980804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403980804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526629600).

403980804 is an abundant number, since it is smaller than the sum of its proper divisors (649278396).

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

403980804 is a wasteful number, since it uses less digits than its factorization.

403980804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21089 (or 21081 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 403980804 is about 20099.2737182218. The cubic root of 403980804 is about 739.2424704684.

The spelling of 403980804 in words is "four hundred three million, nine hundred eighty thousand, eight hundred four".