404330040 has 96 divisors (see below), whose sum is σ = 1391392080. Its totient is φ = 101477376.

The previous prime is 404330039. The next prime is 404330063. The reversal of 404330040 is 40033404.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 404329995 and 404330022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26914 + ... + 39153.

Almost surely, 2^404330040 is an apocalyptic number.

404330040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404330040 is an abundant number, since it is smaller than the sum of its proper divisors (987062040).

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

404330040 is a wasteful number, since it uses less digits than its factorization.

404330040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66101 (or 66094 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 404330040 is about 20107.9596180219. The cubic root of 404330040 is about 739.4554308547.

Adding to 404330040 its reverse (40033404), we get a palindrome (444363444).

The spelling of 404330040 in words is "four hundred four million, three hundred thirty thousand, forty".