17084989 has 2 divisors, whose sum is σ = 17084990. Its totient is φ = 17084988.

The previous prime is 17084981. The next prime is 17085023. The reversal of 17084989 is 98948071.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14707225 + 2377764 = 3835^2 + 1542^2 .

It is a cyclic number.

It is not a de Polignac number, because 17084989 - 2³ = 17084981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17084981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8542494 + 8542495.

It is an arithmetic number, because the mean of its divisors is an integer number (8542495).

Almost surely, 2^17084989 is an apocalyptic number.

It is an amenable number.

17084989 is a deficient number, since it is larger than the sum of its proper divisors (1).

17084989 is an equidigital number, since it uses as much as digits as its factorization.

17084989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 17084989 is about 4133.3992064643. The cubic root of 17084989 is about 257.5559384552. Note that the first 3 decimals are identical.

The spelling of 17084989 in words is "seventeen million, eighty-four thousand, nine hundred eighty-nine".