11639944 has 8 divisors (see below), whose sum is σ = 21824910. Its totient is φ = 5819968.

The previous prime is 11639897. The next prime is 11639963. The reversal of 11639944 is 44993611.

It can be written as a sum of positive squares in only one way, i.e., 10562500 + 1077444 = 3250^2 + 1038^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727489 + ... + 727504.

Almost surely, 2^11639944 is an apocalyptic number.

It is an amenable number.

11639944 is a deficient number, since it is larger than the sum of its proper divisors (10184966).

11639944 is a wasteful number, since it uses less digits than its factorization.

11639944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454999 (or 1454995 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 11639944 is about 3411.7362148912. The cubic root of 11639944 is about 226.6297729264.

The spelling of 11639944 in words is "eleven million, six hundred thirty-nine thousand, nine hundred forty-four".