40402440004 has 24 divisors (see below), whose sum is σ = 72869091680. Its totient is φ = 19589459904.

The previous prime is 40402439981. The next prime is 40402440007. The reversal of 40402440004 is 40004420404.

It is not an unprimeable number, because it can be changed into a prime (40402440007) 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, 821049 + ... + 868864.

Almost surely, 2^40402440004 is an apocalyptic number.

It is an amenable number.

40402440004 is a deficient number, since it is larger than the sum of its proper divisors (32466651676).

40402440004 is a wasteful number, since it uses less digits than its factorization.

40402440004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690099 (or 1690097 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 40402440004 its reverse (40004420404), we get a palindrome (80406860408).

The spelling of 40402440004 in words is "forty billion, four hundred two million, four hundred forty thousand, four".