17138889 has 12 divisors (see below), whose sum is σ = 24840816. Its totient is φ = 11386872.

The previous prime is 17138857. The next prime is 17138909. The reversal of 17138889 is 98883171.

It is not a de Polignac number, because 17138889 - 2⁵ = 17138857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (17138189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339 + ... + 5864.

It is an arithmetic number, because the mean of its divisors is an integer number (2070068).

Almost surely, 2^17138889 is an apocalyptic number.

It is an amenable number.

17138889 is a deficient number, since it is larger than the sum of its proper divisors (7701927).

17138889 is a wasteful number, since it uses less digits than its factorization.

17138889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6516 (or 6513 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 17138889 is about 4139.9141295442. The cubic root of 17138889 is about 257.8265013443.

It can be divided in two parts, 171 and 38889, that added together give a triangular number (39060 = T₂₇₉).

The spelling of 17138889 in words is "seventeen million, one hundred thirty-eight thousand, eight hundred eighty-nine".