40330404 has 18 divisors (see below), whose sum is σ = 101946390. Its totient is φ = 13443456.

The previous prime is 40330399. The next prime is 40330417. The reversal of 40330404 is 40403304.

It can be written as a sum of positive squares in only one way, i.e., 26625600 + 13704804 = 5160^2 + 3702^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 560109 + ... + 560180.

Almost surely, 2^40330404 is an apocalyptic number.

It is an amenable number.

40330404 is an abundant number, since it is smaller than the sum of its proper divisors (61615986).

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

40330404 is a wasteful number, since it uses less digits than its factorization.

40330404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120299 (or 1120294 counting only the distinct ones).

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

The square root of 40330404 is about 6350.6223317089. The cubic root of 40330404 is about 342.9342466472.

Adding to 40330404 its reverse (40403304), we get a palindrome (80733708).

Subtracting 40330404 from its reverse (40403304), we obtain a square (72900 = 270²).

The spelling of 40330404 in words is "forty million, three hundred thirty thousand, four hundred four".