16809827 has 2 divisors, whose sum is σ = 16809828. Its totient is φ = 16809826.

The previous prime is 16809823. The next prime is 16809829. The reversal of 16809827 is 72890861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16809827 - 2² = 16809823 is a prime.

Together with 16809829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16809823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8404913 + 8404914.

It is an arithmetic number, because the mean of its divisors is an integer number (8404914).

Almost surely, 2^16809827 is an apocalyptic number.

16809827 is a deficient number, since it is larger than the sum of its proper divisors (1).

16809827 is an equidigital number, since it uses as much as digits as its factorization.

16809827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 16809827 is about 4099.9789023847. The cubic root of 16809827 is about 256.1657607696.

The spelling of 16809827 in words is "sixteen million, eight hundred nine thousand, eight hundred twenty-seven".