16944013 has 4 divisors (see below), whose sum is σ = 17048128. Its totient is φ = 16839900.

The previous prime is 16944001. The next prime is 16944043. The reversal of 16944013 is 31044961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16944013 - 2⁵ = 16943981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16944043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51813 + ... + 52138.

It is an arithmetic number, because the mean of its divisors is an integer number (4262032).

Almost surely, 2^16944013 is an apocalyptic number.

It is an amenable number.

16944013 is a deficient number, since it is larger than the sum of its proper divisors (104115).

16944013 is a wasteful number, since it uses less digits than its factorization.

16944013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104114.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 16944013 is about 4116.3106053844. The cubic root of 16944013 is about 256.8455773650.

Adding to 16944013 its reverse (31044961), we get a palindrome (47988974).

The spelling of 16944013 in words is "sixteen million, nine hundred forty-four thousand, thirteen".