2116959479 has 4 divisors (see below), whose sum is σ = 2126045376. Its totient is φ = 2107873584.

The previous prime is 2116959473. The next prime is 2116959541. The reversal of 2116959479 is 9749596112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2116959479 - 2⁴ = 2116959463 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 2116959479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116959473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4542599 + ... + 4543064.

It is an arithmetic number, because the mean of its divisors is an integer number (531511344).

Almost surely, 2^2116959479 is an apocalyptic number.

2116959479 is a deficient number, since it is larger than the sum of its proper divisors (9085897).

2116959479 is an equidigital number, since it uses as much as digits as its factorization.

2116959479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9085896.

The product of its digits is 1224720, while the sum is 53.

The square root of 2116959479 is about 46010.4279375882. The cubic root of 2116959479 is about 1284.0172208671.

The spelling of 2116959479 in words is "two billion, one hundred sixteen million, nine hundred fifty-nine thousand, four hundred seventy-nine".