40990409904 has 20 divisors (see below), whose sum is σ = 105891892376. Its totient is φ = 13663469952.

The previous prime is 40990409881. The next prime is 40990409909.

40990409904 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 853966873 = 40990409904 / (4 + 0 + 9 + 9 + 0 + 4 + 0 + 9 + 9 + 0 + 4).

It is not an unprimeable number, because it can be changed into a prime (40990409909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426983389 + ... + 426983484.

Almost surely, 2^40990409904 is an apocalyptic number.

It is an amenable number.

40990409904 is an abundant number, since it is smaller than the sum of its proper divisors (64901482472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40990409904 is a wasteful number, since it uses less digits than its factorization.

40990409904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853966884 (or 853966878 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 48.

The spelling of 40990409904 in words is "forty billion, nine hundred ninety million, four hundred nine thousand, nine hundred four".