403862940 has 144 divisors (see below), whose sum is σ = 1332440928. Its totient is φ = 98422272.

The previous prime is 403862933. The next prime is 403862989. The reversal of 403862940 is 49268304.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 403862895 and 403862904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 249574 + ... + 251186.

It is an arithmetic number, because the mean of its divisors is an integer number (9253062).

Almost surely, 2^403862940 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 403862940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (666220464).

403862940 is an abundant number, since it is smaller than the sum of its proper divisors (928577988).

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

403862940 is a wasteful number, since it uses less digits than its factorization.

403862940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748 (or 1743 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 403862940 is about 20096.3414580863. The cubic root of 403862940 is about 739.1705705591.

The spelling of 403862940 in words is "four hundred three million, eight hundred sixty-two thousand, nine hundred forty".