17139047 has 4 divisors (see below), whose sum is σ = 17214120. Its totient is φ = 17063976.

The previous prime is 17139037. The next prime is 17139053. The reversal of 17139047 is 74093171.

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

It is a cyclic number.

It is not a de Polignac number, because 17139047 - 2¹² = 17134951 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 (17139037) 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, 37193 + ... + 37650.

It is an arithmetic number, because the mean of its divisors is an integer number (4303530).

Almost surely, 2^17139047 is an apocalyptic number.

17139047 is a deficient number, since it is larger than the sum of its proper divisors (75073).

17139047 is an equidigital number, since it uses as much as digits as its factorization.

17139047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75072.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 17139047 is about 4139.9332120217. The cubic root of 17139047 is about 257.8272936255.

The spelling of 17139047 in words is "seventeen million, one hundred thirty-nine thousand, forty-seven".