13964644 has 12 divisors (see below), whose sum is σ = 24663100. Its totient is φ = 6918048.

The previous prime is 13964627. The next prime is 13964659. The reversal of 13964644 is 44646931.

It can be written as a sum of positive squares in 2 ways, for example, as 3467044 + 10497600 = 1862^2 + 3240^2 .

It is a super-2 number, since 2×13964644² = 390022564093472, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 15579 + ... + 16450.

Almost surely, 2^13964644 is an apocalyptic number.

It is an amenable number.

13964644 is a deficient number, since it is larger than the sum of its proper divisors (10698456).

13964644 is a wasteful number, since it uses less digits than its factorization.

13964644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32142 (or 32140 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 13964644 is about 3736.9297558290. The cubic root of 13964644 is about 240.8111673132.

The spelling of 13964644 in words is "thirteen million, nine hundred sixty-four thousand, six hundred forty-four".