40009189617 has 6 divisors (see below), whose sum is σ = 57791051682. Its totient is φ = 26672793072.

The previous prime is 40009189579. The next prime is 40009189621. The reversal of 40009189617 is 71698190004.

It is a happy number.

40009189617 is a `hidden beast` number, since 400 + 0 + 9 + 189 + 61 + 7 = 666.

40009189617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35193384801 + 4815804816 = 187599^2 + 69396^2 .

It is not a de Polignac number, because 40009189617 - 2⁶ = 40009189553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40009189667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2222732748 + ... + 2222732765.

It is an arithmetic number, because the mean of its divisors is an integer number (9631841947).

Almost surely, 2^40009189617 is an apocalyptic number.

It is an amenable number.

40009189617 is a deficient number, since it is larger than the sum of its proper divisors (17781862065).

40009189617 is a wasteful number, since it uses less digits than its factorization.

40009189617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445465519 (or 4445465516 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 40009189617 in words is "forty billion, nine million, one hundred eighty-nine thousand, six hundred seventeen".