17139247 has 8 divisors (see below), whose sum is σ = 18229536. Its totient is φ = 16058112.

The previous prime is 17139229. The next prime is 17139257. The reversal of 17139247 is 74293171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 17139247 - 2⁷ = 17139119 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1798 + ... + 6124.

It is an arithmetic number, because the mean of its divisors is an integer number (2278692).

Almost surely, 2^17139247 is an apocalyptic number.

17139247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

17139247 is a deficient number, since it is larger than the sum of its proper divisors (1090289).

17139247 is a wasteful number, since it uses less digits than its factorization.

17139247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4577.

The product of its digits is 10584, while the sum is 34.

The square root of 17139247 is about 4139.9573669302. The cubic root of 17139247 is about 257.8282965062.

The spelling of 17139247 in words is "seventeen million, one hundred thirty-nine thousand, two hundred forty-seven".