17979271 has 2 divisors, whose sum is σ = 17979272. Its totient is φ = 17979270.

The previous prime is 17979229. The next prime is 17979277. The reversal of 17979271 is 17297971.

It is a strong prime.

It is an emirp because it is prime and its reverse (17297971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17979271 - 2⁹ = 17978759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17979277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8989635 + 8989636.

It is an arithmetic number, because the mean of its divisors is an integer number (8989636).

Almost surely, 2^17979271 is an apocalyptic number.

17979271 is a deficient number, since it is larger than the sum of its proper divisors (1).

17979271 is an equidigital number, since it uses as much as digits as its factorization.

17979271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55566, while the sum is 43.

The square root of 17979271 is about 4240.1970473081. The cubic root of 17979271 is about 261.9734982809.

The spelling of 17979271 in words is "seventeen million, nine hundred seventy-nine thousand, two hundred seventy-one".