17139207 has 4 divisors (see below), whose sum is σ = 22852280. Its totient is φ = 11426136.

The previous prime is 17139191. The next prime is 17139217. The reversal of 17139207 is 70293171.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 17139207 - 2⁴ = 17139191 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 (17139217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2856532 + ... + 2856537.

It is an arithmetic number, because the mean of its divisors is an integer number (5713070).

Almost surely, 2^17139207 is an apocalyptic number.

17139207 is a deficient number, since it is larger than the sum of its proper divisors (5713073).

17139207 is an equidigital number, since it uses as much as digits as its factorization.

17139207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5713072.

The product of its (nonzero) digits is 2646, while the sum is 30.

The square root of 17139207 is about 4139.9525359598. The cubic root of 17139207 is about 257.8280959307.

The spelling of 17139207 in words is "seventeen million, one hundred thirty-nine thousand, two hundred seven".