16839539 has 2 divisors, whose sum is σ = 16839540. Its totient is φ = 16839538.

The previous prime is 16839523. The next prime is 16839577. The reversal of 16839539 is 93593861.

It is a weak prime.

It is an emirp because it is prime and its reverse (93593861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16839539 - 2⁴ = 16839523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16839539.

It is not a weakly prime, because it can be changed into another prime (16839509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8419769 + 8419770.

It is an arithmetic number, because the mean of its divisors is an integer number (8419770).

Almost surely, 2^16839539 is an apocalyptic number.

16839539 is a deficient number, since it is larger than the sum of its proper divisors (1).

16839539 is an equidigital number, since it uses as much as digits as its factorization.

16839539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 44.

The square root of 16839539 is about 4103.6007359391. The cubic root of 16839539 is about 256.3165994650.

The spelling of 16839539 in words is "sixteen million, eight hundred thirty-nine thousand, five hundred thirty-nine".