17129989 has 2 divisors, whose sum is σ = 17129990. Its totient is φ = 17129988.

The previous prime is 17129969. The next prime is 17130007. The reversal of 17129989 is 98992171.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16265089 + 864900 = 4033^2 + 930^2 .

It is an emirp because it is prime and its reverse (98992171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17129989 - 2¹⁵ = 17097221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17129929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8564994 + 8564995.

It is an arithmetic number, because the mean of its divisors is an integer number (8564995).

Almost surely, 2^17129989 is an apocalyptic number.

It is an amenable number.

17129989 is a deficient number, since it is larger than the sum of its proper divisors (1).

17129989 is an equidigital number, since it uses as much as digits as its factorization.

17129989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 46.

The square root of 17129989 is about 4138.8390884401. The cubic root of 17129989 is about 257.7818649782.

The spelling of 17129989 in words is "seventeen million, one hundred twenty-nine thousand, nine hundred eighty-nine".