11939939 has 8 divisors (see below), whose sum is σ = 13328832. Its totient is φ = 10601640.

The previous prime is 11939911. The next prime is 11939947. The reversal of 11939939 is 93993911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11939939 - 2¹⁶ = 11874403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11939939.

It is not an unprimeable number, because it can be changed into a prime (11939959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12149 + ... + 13094.

It is an arithmetic number, because the mean of its divisors is an integer number (1666104).

Almost surely, 2^11939939 is an apocalyptic number.

11939939 is a deficient number, since it is larger than the sum of its proper divisors (1388893).

11939939 is a wasteful number, since it uses less digits than its factorization.

11939939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25297.

The product of its digits is 59049, while the sum is 44.

The square root of 11939939 is about 3455.4216819370. The cubic root of 11939939 is about 228.5602501416.

The spelling of 11939939 in words is "eleven million, nine hundred thirty-nine thousand, nine hundred thirty-nine".