40402020404 has 12 divisors (see below), whose sum is σ = 71403571428. Its totient is φ = 20001000000.

The previous prime is 40402020403. The next prime is 40402020427.

40402020404 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 39701359504 + 700660900 = 199252^2 + 26470^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402020403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50002097 + ... + 50002904.

It is an arithmetic number, because the mean of its divisors is an integer number (5950297619).

Almost surely, 2^40402020404 is an apocalyptic number.

It is an amenable number.

40402020404 is a deficient number, since it is larger than the sum of its proper divisors (31001551024).

40402020404 is a wasteful number, since it uses less digits than its factorization.

40402020404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100005106 (or 100005104 counting only the distinct ones).

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

It can be divided in two parts, 404020 and 20404, that added together give a palindrome (424424).

The spelling of 40402020404 in words is "forty billion, four hundred two million, twenty thousand, four hundred four".