40404430 has 16 divisors (see below), whose sum is σ = 79339824. Its totient is φ = 14692480.

The previous prime is 40404409. The next prime is 40404433. The reversal of 40404430 is 3440404.

It is a junction number, because it is equal to n+sod(n) for n = 40404398 and 40404407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40404433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183547 + ... + 183766.

It is an arithmetic number, because the mean of its divisors is an integer number (4958739).

Almost surely, 2^40404430 is an apocalyptic number.

40404430 is a deficient number, since it is larger than the sum of its proper divisors (38935394).

40404430 is a wasteful number, since it uses less digits than its factorization.

40404430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367331.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40404430 is about 6356.4479074401. The cubic root of 40404430 is about 343.1439357148.

Adding to 40404430 its reverse (3440404), we get a palindrome (43844834).

The spelling of 40404430 in words is "forty million, four hundred four thousand, four hundred thirty".