1117647939 has 12 divisors (see below), whose sum is σ = 1494288728. Its totient is φ = 743058240.

The previous prime is 1117647931. The next prime is 1117648013. The reversal of 1117647939 is 9397467111.

It is not a de Polignac number, because 1117647939 - 2³ = 1117647931 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 (1117647931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 636687 + ... + 638439.

Almost surely, 2^1117647939 is an apocalyptic number.

1117647939 is a deficient number, since it is larger than the sum of its proper divisors (376640789).

1117647939 is an frugal number, since it uses more digits than its factorization.

1117647939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2678 (or 2217 counting only the distinct ones).

The product of its digits is 285768, while the sum is 48.

The square root of 1117647939 is about 33431.2419601785. The cubic root of 1117647939 is about 1037.7713428569.

The spelling of 1117647939 in words is "one billion, one hundred seventeen million, six hundred forty-seven thousand, nine hundred thirty-nine".