16869887 has 2 divisors, whose sum is σ = 16869888. Its totient is φ = 16869886.

The previous prime is 16869869. The next prime is 16869907. The reversal of 16869887 is 78896861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16869887 - 2⁶ = 16869823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16869857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8434943 + 8434944.

It is an arithmetic number, because the mean of its divisors is an integer number (8434944).

Almost surely, 2^16869887 is an apocalyptic number.

16869887 is a deficient number, since it is larger than the sum of its proper divisors (1).

16869887 is an equidigital number, since it uses as much as digits as its factorization.

16869887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 53.

The square root of 16869887 is about 4107.2967995995. The cubic root of 16869887 is about 256.4704838824.

The spelling of 16869887 in words is "sixteen million, eight hundred sixty-nine thousand, eight hundred eighty-seven".