16872439 has 2 divisors, whose sum is σ = 16872440. Its totient is φ = 16872438.

The previous prime is 16872433. The next prime is 16872451. The reversal of 16872439 is 93427861.

It is a weak prime.

It is an emirp because it is prime and its reverse (93427861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16872439 - 2³ = 16872431 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16872431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8436219 + 8436220.

It is an arithmetic number, because the mean of its divisors is an integer number (8436220).

Almost surely, 2^16872439 is an apocalyptic number.

16872439 is a deficient number, since it is larger than the sum of its proper divisors (1).

16872439 is an equidigital number, since it uses as much as digits as its factorization.

16872439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 16872439 is about 4107.6074544679. The cubic root of 16872439 is about 256.4834157942.

The spelling of 16872439 in words is "sixteen million, eight hundred seventy-two thousand, four hundred thirty-nine".