40909040909 has 16 divisors (see below), whose sum is σ = 45086578560. Its totient is φ = 36808200000.

The previous prime is 40909040903. The next prime is 40909040929. The reversal of 40909040909 is 90904090904.

It is a happy number.

40909040909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-40909040909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40909040909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40909040903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4126859 + ... + 4136759.

It is an arithmetic number, because the mean of its divisors is an integer number (2817911160).

Almost surely, 2^40909040909 is an apocalyptic number.

It is an amenable number.

40909040909 is a deficient number, since it is larger than the sum of its proper divisors (4177537651).

40909040909 is a wasteful number, since it uses less digits than its factorization.

40909040909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13732.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 40909040909 in words is "forty billion, nine hundred nine million, forty thousand, nine hundred nine".