13961644 has 24 divisors (see below), whose sum is σ = 26379360. Its totient is φ = 6445824.

The previous prime is 13961639. The next prime is 13961657. The reversal of 13961644 is 44616931.

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, 52 + ... + 5284.

It is an arithmetic number, because the mean of its divisors is an integer number (1099140).

Almost surely, 2^13961644 is an apocalyptic number.

It is an amenable number.

13961644 is a deficient number, since it is larger than the sum of its proper divisors (12417716).

13961644 is a wasteful number, since it uses less digits than its factorization.

13961644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289 (or 5287 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 13961644 is about 3736.5283352331. The cubic root of 13961644 is about 240.7939217312.

The spelling of 13961644 in words is "thirteen million, nine hundred sixty-one thousand, six hundred forty-four".