16891411 has 2 divisors, whose sum is σ = 16891412. Its totient is φ = 16891410.

The previous prime is 16891393. The next prime is 16891423. The reversal of 16891411 is 11419861.

It is a strong prime.

It is an emirp because it is prime and its reverse (11419861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16891411 - 2⁵ = 16891379 is a prime.

It is not a weakly prime, because it can be changed into another prime (16891481) 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 as a sum of consecutive naturals, namely, 8445705 + 8445706.

It is an arithmetic number, because the mean of its divisors is an integer number (8445706).

Almost surely, 2^16891411 is an apocalyptic number.

16891411 is a deficient number, since it is larger than the sum of its proper divisors (1).

16891411 is an equidigital number, since it uses as much as digits as its factorization.

16891411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 31.

The square root of 16891411 is about 4109.9161791939. The cubic root of 16891411 is about 256.5795129592.

The spelling of 16891411 in words is "sixteen million, eight hundred ninety-one thousand, four hundred eleven".