17139317 has 4 divisors (see below), whose sum is σ = 18457740. Its totient is φ = 15820896.

The previous prime is 17139313. The next prime is 17139341. The reversal of 17139317 is 71393171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71393171 = 6367 ⋅11213.

It can be written as a sum of positive squares in 2 ways, for example, as 8145316 + 8994001 = 2854^2 + 2999^2 .

It is not a de Polignac number, because 17139317 - 2² = 17139313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17139313) 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 in 3 ways as a sum of consecutive naturals, for example, 659192 + ... + 659217.

It is an arithmetic number, because the mean of its divisors is an integer number (4614435).

Almost surely, 2^17139317 is an apocalyptic number.

It is an amenable number.

17139317 is a deficient number, since it is larger than the sum of its proper divisors (1318423).

17139317 is a wasteful number, since it uses less digits than its factorization.

17139317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318422.

The product of its digits is 3969, while the sum is 32.

The square root of 17139317 is about 4139.9658211150. The cubic root of 17139317 is about 257.8286475126.

The spelling of 17139317 in words is "seventeen million, one hundred thirty-nine thousand, three hundred seventeen".