11139644 has 6 divisors (see below), whose sum is σ = 19494384. Its totient is φ = 5569820.

The previous prime is 11139629. The next prime is 11139647. The reversal of 11139644 is 44693111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11139647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392452 + ... + 1392459.

It is an arithmetic number, because the mean of its divisors is an integer number (3249064).

Almost surely, 2^11139644 is an apocalyptic number.

It is an amenable number.

11139644 is a deficient number, since it is larger than the sum of its proper divisors (8354740).

11139644 is a wasteful number, since it uses less digits than its factorization.

11139644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784915 (or 2784913 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 11139644 is about 3337.6105225146. The cubic root of 11139644 is about 223.3351619860.

The spelling of 11139644 in words is "eleven million, one hundred thirty-nine thousand, six hundred forty-four".