16488289 has 2 divisors, whose sum is σ = 16488290. Its totient is φ = 16488288.

The previous prime is 16488281. The next prime is 16488313. The reversal of 16488289 is 98288461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13749264 + 2739025 = 3708^2 + 1655^2 .

It is a cyclic number.

It is not a de Polignac number, because 16488289 - 2³ = 16488281 is a prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (16488281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8244144 + 8244145.

It is an arithmetic number, because the mean of its divisors is an integer number (8244145).

Almost surely, 2^16488289 is an apocalyptic number.

It is an amenable number.

16488289 is a deficient number, since it is larger than the sum of its proper divisors (1).

16488289 is an equidigital number, since it uses as much as digits as its factorization.

16488289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 46.

The square root of 16488289 is about 4060.5774219931. The cubic root of 16488289 is about 254.5219236867.

The spelling of 16488289 in words is "sixteen million, four hundred eighty-eight thousand, two hundred eighty-nine".