2116947439 has 6 divisors (see below), whose sum is σ = 2212990976. Its totient is φ = 2024905740.

The previous prime is 2116947433. The next prime is 2116947451. The reversal of 2116947439 is 9347496112.

It is not a de Polignac number, because 2116947439 - 2⁵ = 2116947407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116947433) 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, 2000367 + ... + 2001424.

Almost surely, 2^2116947439 is an apocalyptic number.

2116947439 is a deficient number, since it is larger than the sum of its proper divisors (96043537).

2116947439 is an equidigital number, since it uses as much as digits as its factorization.

2116947439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4001837 (or 4001814 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 2116947439 is about 46010.2970974976. The cubic root of 2116947439 is about 1284.0147866217.

The spelling of 2116947439 in words is "two billion, one hundred sixteen million, nine hundred forty-seven thousand, four hundred thirty-nine".