16887539 has 2 divisors, whose sum is σ = 16887540. Its totient is φ = 16887538.

The previous prime is 16887517. The next prime is 16887553. The reversal of 16887539 is 93578861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16887539 - 2²⁴ = 110323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16887493 and 16887502.

It is not a weakly prime, because it can be changed into another prime (16887509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8443769 + 8443770.

It is an arithmetic number, because the mean of its divisors is an integer number (8443770).

Almost surely, 2^16887539 is an apocalyptic number.

16887539 is a deficient number, since it is larger than the sum of its proper divisors (1).

16887539 is an equidigital number, since it uses as much as digits as its factorization.

16887539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 16887539 is about 4109.4450963603. The cubic root of 16887539 is about 256.5599063123.

The spelling of 16887539 in words is "sixteen million, eight hundred eighty-seven thousand, five hundred thirty-nine".