17006989 has 2 divisors, whose sum is σ = 17006990. Its totient is φ = 17006988.

The previous prime is 17006971. The next prime is 17006993. The reversal of 17006989 is 98960071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15342889 + 1664100 = 3917^2 + 1290^2 .

It is a cyclic number.

It is not a de Polignac number, because 17006989 - 2¹³ = 16998797 is a prime.

It is a super-2 number, since 2×17006989² = 578475349692242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17006909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8503494 + 8503495.

It is an arithmetic number, because the mean of its divisors is an integer number (8503495).

Almost surely, 2^17006989 is an apocalyptic number.

It is an amenable number.

17006989 is a deficient number, since it is larger than the sum of its proper divisors (1).

17006989 is an equidigital number, since it uses as much as digits as its factorization.

17006989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 17006989 is about 4123.9530792675. The cubic root of 17006989 is about 257.1633908794.

The spelling of 17006989 in words is "seventeen million, six thousand, nine hundred eighty-nine".