11939388 has 12 divisors (see below), whose sum is σ = 27858600. Its totient is φ = 3979792.

The previous prime is 11939377. The next prime is 11939393. The reversal of 11939388 is 88393911.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497463 + ... + 497486.

It is an arithmetic number, because the mean of its divisors is an integer number (2321550).

Almost surely, 2^11939388 is an apocalyptic number.

It is an amenable number.

11939388 is an abundant number, since it is smaller than the sum of its proper divisors (15919212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11939388 is a wasteful number, since it uses less digits than its factorization.

11939388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994956 (or 994954 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 11939388 is about 3455.3419512401. The cubic root of 11939388 is about 228.5567342488.

The spelling of 11939388 in words is "eleven million, nine hundred thirty-nine thousand, three hundred eighty-eight".