11839988 has 12 divisors (see below), whose sum is σ = 21111300. Its totient is φ = 5808192.

The previous prime is 11839979. The next prime is 11839991. The reversal of 11839988 is 88993811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9412624 + 2427364 = 3068^2 + 1558^2 .

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, 27713 + ... + 28136.

It is an arithmetic number, because the mean of its divisors is an integer number (1759275).

Almost surely, 2^11839988 is an apocalyptic number.

It is an amenable number.

11839988 is a deficient number, since it is larger than the sum of its proper divisors (9271312).

11839988 is a wasteful number, since it uses less digits than its factorization.

11839988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55906 (or 55904 counting only the distinct ones).

The product of its digits is 124416, while the sum is 47.

The square root of 11839988 is about 3440.9283631020. The cubic root of 11839988 is about 227.9206916119.

The spelling of 11839988 in words is "eleven million, eight hundred thirty-nine thousand, nine hundred eighty-eight".