11517939 has 12 divisors (see below), whose sum is σ = 16803072. Its totient is φ = 7602000.

The previous prime is 11517929. The next prime is 11517943. The reversal of 11517939 is 93971511.

It is not a de Polignac number, because 11517939 - 2⁹ = 11517427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11517929) 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 11 ways as a sum of consecutive naturals, for example, 5427 + ... + 7244.

It is an arithmetic number, because the mean of its divisors is an integer number (1400256).

Almost surely, 2^11517939 is an apocalyptic number.

11517939 is a deficient number, since it is larger than the sum of its proper divisors (5285133).

11517939 is a wasteful number, since it uses less digits than its factorization.

11517939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12778 (or 12775 counting only the distinct ones).

The product of its digits is 8505, while the sum is 36.

The square root of 11517939 is about 3393.8089221404. The cubic root of 11517939 is about 225.8351775500.

The spelling of 11517939 in words is "eleven million, five hundred seventeen thousand, nine hundred thirty-nine".