11639942 has 16 divisors (see below), whose sum is σ = 18133632. Its totient is φ = 5597760.

The previous prime is 11639897. The next prime is 11639963. The reversal of 11639942 is 24993611.

It is a congruent number.

It is an unprimeable number.

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, 11738 + ... + 12690.

It is an arithmetic number, because the mean of its divisors is an integer number (1133352).

Almost surely, 2^11639942 is an apocalyptic number.

11639942 is a deficient number, since it is larger than the sum of its proper divisors (6493690).

11639942 is a wasteful number, since it uses less digits than its factorization.

11639942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183.

The product of its digits is 11664, while the sum is 35.

The square root of 11639942 is about 3411.7359217853. The cubic root of 11639942 is about 226.6297599464.

The spelling of 11639942 in words is "eleven million, six hundred thirty-nine thousand, nine hundred forty-two".