16488709 has 2 divisors, whose sum is σ = 16488710. Its totient is φ = 16488708.

The previous prime is 16488707. The next prime is 16488721. The reversal of 16488709 is 90788461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15824484 + 664225 = 3978^2 + 815^2 .

It is a cyclic number.

It is not a de Polignac number, because 16488709 - 2¹ = 16488707 is a prime.

Together with 16488707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16488701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8244354 + 8244355.

It is an arithmetic number, because the mean of its divisors is an integer number (8244355).

Almost surely, 2^16488709 is an apocalyptic number.

It is an amenable number.

16488709 is a deficient number, since it is larger than the sum of its proper divisors (1).

16488709 is an equidigital number, since it uses as much as digits as its factorization.

16488709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 16488709 is about 4060.6291384464. The cubic root of 16488709 is about 254.5240847822.

The spelling of 16488709 in words is "sixteen million, four hundred eighty-eight thousand, seven hundred nine".