16939271 has 2 divisors, whose sum is σ = 16939272. Its totient is φ = 16939270.

The previous prime is 16939261. The next prime is 16939283. The reversal of 16939271 is 17293961.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (17293961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16939271 - 2¹⁴ = 16922887 is a prime.

It is a super-2 number, since 2×16939271² = 573877804022882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16939231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8469635 + 8469636.

It is an arithmetic number, because the mean of its divisors is an integer number (8469636).

Almost surely, 2^16939271 is an apocalyptic number.

16939271 is a deficient number, since it is larger than the sum of its proper divisors (1).

16939271 is an equidigital number, since it uses as much as digits as its factorization.

16939271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The square root of 16939271 is about 4115.7345638416. The cubic root of 16939271 is about 256.8216146165.

The spelling of 16939271 in words is "sixteen million, nine hundred thirty-nine thousand, two hundred seventy-one".