40928868909 has 6 divisors (see below), whose sum is σ = 59119477326. Its totient is φ = 27285912600.

The previous prime is 40928868899. The next prime is 40928868913. The reversal of 40928868909 is 90986882904.

40928868909 is a `hidden beast` number, since 409 + 2 + 88 + 68 + 90 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34668578025 + 6260290884 = 186195^2 + 79122^2 .

It is not a de Polignac number, because 40928868909 - 2³⁵ = 6569130541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40928868979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2273826042 + ... + 2273826059.

It is an arithmetic number, because the mean of its divisors is an integer number (9853246221).

Almost surely, 2^40928868909 is an apocalyptic number.

It is an amenable number.

40928868909 is a deficient number, since it is larger than the sum of its proper divisors (18190608417).

40928868909 is a wasteful number, since it uses less digits than its factorization.

40928868909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547652107 (or 4547652104 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 40928868909 in words is "forty billion, nine hundred twenty-eight million, eight hundred sixty-eight thousand, nine hundred nine".