16744993 has 2 divisors, whose sum is σ = 16744994. Its totient is φ = 16744992.

The previous prime is 16744969. The next prime is 16744997. The reversal of 16744993 is 39944761.

16744993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16744464 + 529 = 4092^2 + 23^2 .

It is an emirp because it is prime and its reverse (39944761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16744993 - 2⁵ = 16744961 is a prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (16744997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8372496 + 8372497.

It is an arithmetic number, because the mean of its divisors is an integer number (8372497).

Almost surely, 2^16744993 is an apocalyptic number.

It is an amenable number.

16744993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16744993 is an equidigital number, since it uses as much as digits as its factorization.

16744993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 16744993 is about 4092.0646378082. The cubic root of 16744993 is about 255.8360003070.

The spelling of 16744993 in words is "sixteen million, seven hundred forty-four thousand, nine hundred ninety-three".