16971347 has 2 divisors, whose sum is σ = 16971348. Its totient is φ = 16971346.

The previous prime is 16971337. The next prime is 16971349. The reversal of 16971347 is 74317961.

It is a strong prime.

It is an emirp because it is prime and its reverse (74317961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16971347 - 2⁸ = 16971091 is a prime.

Together with 16971349, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1089587 and since 16971347 and 1089587 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16971347.

It is not a weakly prime, because it can be changed into another prime (16971349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8485673 + 8485674.

It is an arithmetic number, because the mean of its divisors is an integer number (8485674).

Almost surely, 2^16971347 is an apocalyptic number.

16971347 is a deficient number, since it is larger than the sum of its proper divisors (1).

16971347 is an equidigital number, since it uses as much as digits as its factorization.

16971347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 38.

The square root of 16971347 is about 4119.6294736299. The cubic root of 16971347 is about 256.9836171785.

The spelling of 16971347 in words is "sixteen million, nine hundred seventy-one thousand, three hundred forty-seven".