11839866 has 16 divisors (see below), whose sum is σ = 23786784. Its totient is φ = 3928784.

The previous prime is 11839853. The next prime is 11839873. The reversal of 11839866 is 66893811.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 7 ways as a sum of consecutive naturals, for example, 2985 + ... + 5708.

It is an arithmetic number, because the mean of its divisors is an integer number (1486674).

Almost surely, 2^11839866 is an apocalyptic number.

11839866 is an abundant number, since it is smaller than the sum of its proper divisors (11946918).

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

11839866 is a wasteful number, since it uses less digits than its factorization.

11839866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8925.

The product of its digits is 62208, while the sum is 42.

The square root of 11839866 is about 3440.9106352825. The cubic root of 11839866 is about 227.9199087727.

The spelling of 11839866 in words is "eleven million, eight hundred thirty-nine thousand, eight hundred sixty-six".