16709149 has 2 divisors, whose sum is σ = 16709150. Its totient is φ = 16709148.

The previous prime is 16709107. The next prime is 16709153. The reversal of 16709149 is 94190761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16040025 + 669124 = 4005^2 + 818^2 .

It is a cyclic number.

It is not a de Polignac number, because 16709149 - 2²¹ = 14611997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16709549) 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 as a sum of consecutive naturals, namely, 8354574 + 8354575.

It is an arithmetic number, because the mean of its divisors is an integer number (8354575).

Almost surely, 2^16709149 is an apocalyptic number.

It is an amenable number.

16709149 is a deficient number, since it is larger than the sum of its proper divisors (1).

16709149 is an equidigital number, since it uses as much as digits as its factorization.

16709149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 16709149 is about 4087.6825953100. The cubic root of 16709149 is about 255.6533240774.

The spelling of 16709149 in words is "sixteen million, seven hundred nine thousand, one hundred forty-nine".