2947388117 has 16 divisors (see below), whose sum is σ = 3077015040. Its totient is φ = 2819756352.

The previous prime is 2947388071. The next prime is 2947388149. The reversal of 2947388117 is 7118837492.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2947388117 - 2²⁶ = 2880279253 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 (2947388317) 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 15 ways as a sum of consecutive naturals, for example, 1615868 + ... + 1617690.

It is an arithmetic number, because the mean of its divisors is an integer number (192313440).

Almost surely, 2^2947388117 is an apocalyptic number.

It is an amenable number.

2947388117 is a deficient number, since it is larger than the sum of its proper divisors (129626923).

2947388117 is a wasteful number, since it uses less digits than its factorization.

2947388117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332.

The product of its digits is 677376, while the sum is 50.

The square root of 2947388117 is about 54289.8527995794. The cubic root of 2947388117 is about 1433.7687467458.

The spelling of 2947388117 in words is "two billion, nine hundred forty-seven million, three hundred eighty-eight thousand, one hundred seventeen".