16749249 has 16 divisors (see below), whose sum is σ = 24883200. Its totient is φ = 9934160.

The previous prime is 16749247. The next prime is 16749251. The reversal of 16749249 is 94294761.

It is an interprime number because it is at equal distance from previous prime (16749247) and next prime (16749251).

It is a cyclic number.

It is not a de Polignac number, because 16749249 - 2¹ = 16749247 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 16749249.

It is not an unprimeable number, because it can be changed into a prime (16749247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3849 + ... + 6950.

It is an arithmetic number, because the mean of its divisors is an integer number (1555200).

Almost surely, 2^16749249 is an apocalyptic number.

It is an amenable number.

16749249 is a deficient number, since it is larger than the sum of its proper divisors (8133951).

16749249 is a wasteful number, since it uses less digits than its factorization.

16749249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10860.

The product of its digits is 108864, while the sum is 42.

The square root of 16749249 is about 4092.5846356551. The cubic root of 16749249 is about 255.8576733684.

The spelling of 16749249 in words is "sixteen million, seven hundred forty-nine thousand, two hundred forty-nine".