16817089 has 2 divisors, whose sum is σ = 16817090. Its totient is φ = 16817088.

The previous prime is 16817081. The next prime is 16817107. The reversal of 16817089 is 98071861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13630864 + 3186225 = 3692^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 16817089 - 2³ = 16817081 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16817081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8408544 + 8408545.

It is an arithmetic number, because the mean of its divisors is an integer number (8408545).

Almost surely, 2^16817089 is an apocalyptic number.

It is an amenable number.

16817089 is a deficient number, since it is larger than the sum of its proper divisors (1).

16817089 is an equidigital number, since it uses as much as digits as its factorization.

16817089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 16817089 is about 4100.8644210703. The cubic root of 16817089 is about 256.2026441144.

The spelling of 16817089 in words is "sixteen million, eight hundred seventeen thousand, eighty-nine".