16745399 has 8 divisors (see below), whose sum is σ = 18297360. Its totient is φ = 15198400.

The previous prime is 16745381. The next prime is 16745419. The reversal of 16745399 is 99354761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16745399 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 (16745299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12347 + ... + 13635.

It is an arithmetic number, because the mean of its divisors is an integer number (2287170).

Almost surely, 2^16745399 is an apocalyptic number.

16745399 is a deficient number, since it is larger than the sum of its proper divisors (1551961).

16745399 is a wasteful number, since it uses less digits than its factorization.

16745399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481.

The product of its digits is 204120, while the sum is 44.

The square root of 16745399 is about 4092.1142457170. The cubic root of 16745399 is about 255.8380679614.

The spelling of 16745399 in words is "sixteen million, seven hundred forty-five thousand, three hundred ninety-nine".