7940836659 has 48 divisors (see below), whose sum is σ = 12707939328. Its totient is φ = 4394513088.

The previous prime is 7940836643. The next prime is 7940836661. The reversal of 7940836659 is 9566380497.

It is a happy number.

It is not a de Polignac number, because 7940836659 - 2⁴ = 7940836643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7940836599 and 7940836608.

It is not an unprimeable number, because it can be changed into a prime (7940836669) 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 47 ways as a sum of consecutive naturals, for example, 1209624 + ... + 1216170.

It is an arithmetic number, because the mean of its divisors is an integer number (264748736).

Almost surely, 2^7940836659 is an apocalyptic number.

7940836659 is a deficient number, since it is larger than the sum of its proper divisors (4767102669).

7940836659 is a wasteful number, since it uses less digits than its factorization.

7940836659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6824 (or 6817 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 57.

The square root of 7940836659 is about 89111.3722203850. The cubic root of 7940836659 is about 1995.0575175784.

The spelling of 7940836659 in words is "seven billion, nine hundred forty million, eight hundred thirty-six thousand, six hundred fifty-nine".