16887419 has 2 divisors, whose sum is σ = 16887420. Its totient is φ = 16887418.

The previous prime is 16887413. The next prime is 16887439. The reversal of 16887419 is 91478861.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16887419 is a prime.

It is a super-2 number, since 2×16887419² = 570369840963122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16887419.

It is not a weakly prime, because it can be changed into another prime (16887413) 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, 8443709 + 8443710.

It is an arithmetic number, because the mean of its divisors is an integer number (8443710).

Almost surely, 2^16887419 is an apocalyptic number.

16887419 is a deficient number, since it is larger than the sum of its proper divisors (1).

16887419 is an equidigital number, since it uses as much as digits as its factorization.

16887419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 44.

The square root of 16887419 is about 4109.4304958230. The cubic root of 16887419 is about 256.5592986204.

The spelling of 16887419 in words is "sixteen million, eight hundred eighty-seven thousand, four hundred nineteen".