404040404 has 24 divisors (see below), whose sum is σ = 727069056. Its totient is φ = 196344000.

The previous prime is 404040401. The next prime is 404040409.

404040404 is nontrivially palindromic in base 10.

404040404 is an undulating number in base 10.

404040404 is a modest number, since divided by 40404 gives 404 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404040401) 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, 39899 + ... + 48989.

It is an arithmetic number, because the mean of its divisors is an integer number (30294544).

Almost surely, 2^404040404 is an apocalyptic number.

It is an amenable number.

404040404 is a deficient number, since it is larger than the sum of its proper divisors (323028652).

404040404 is a wasteful number, since it uses less digits than its factorization.

404040404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9407 (or 9405 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 404040404 is about 20100.7563041792. The cubic root of 404040404 is about 739.2788225956.

It can be divided in two parts, 4040 and 40404, that added together give a palindrome (44444).

The spelling of 404040404 in words is "four hundred four million, forty thousand, four hundred four".