16709249 has 8 divisors (see below), whose sum is σ = 18302760. Its totient is φ = 15183616.

The previous prime is 16709239. The next prime is 16709309. The reversal of 16709249 is 94290761.

It can be written as a sum of positive squares in 4 ways, for example, as 6723649 + 9985600 = 2593^2 + 3160^2 .

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-16709249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16709219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16454 + ... + 17439.

It is an arithmetic number, because the mean of its divisors is an integer number (2287845).

Almost surely, 2^16709249 is an apocalyptic number.

It is an amenable number.

16709249 is a deficient number, since it is larger than the sum of its proper divisors (1593511).

16709249 is a wasteful number, since it uses less digits than its factorization.

16709249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33939.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 16709249 is about 4087.6948271611. The cubic root of 16709249 is about 255.6538340830.

The spelling of 16709249 in words is "sixteen million, seven hundred nine thousand, two hundred forty-nine".