40040404 has 6 divisors (see below), whose sum is σ = 70070714. Its totient is φ = 20020200.

The previous prime is 40040393. The next prime is 40040411. The reversal of 40040404 is 40404004.

It can be written as a sum of positive squares in only one way, i.e., 28068804 + 11971600 = 5298^2 + 3460^2 .

40040404 is a modest number, since divided by 40404 gives 40 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005047 + ... + 5005054.

Almost surely, 2^40040404 is an apocalyptic number.

It is an amenable number.

40040404 is a deficient number, since it is larger than the sum of its proper divisors (30030310).

40040404 is a wasteful number, since it uses less digits than its factorization.

40040404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010105 (or 10010103 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 40040404 is about 6327.7487307889. The cubic root of 40040404 is about 342.1103003664.

Adding to 40040404 its reverse (40404004), we get a palindrome (80444408).

It can be divided in two parts, 400 and 40404, that added together give a palindrome (40804).

The spelling of 40040404 in words is "forty million, forty thousand, four hundred four".