16839689 has 2 divisors, whose sum is σ = 16839690. Its totient is φ = 16839688.

The previous prime is 16839679. The next prime is 16839733. The reversal of 16839689 is 98693861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13017664 + 3822025 = 3608^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 16839689 - 2²⁴ = 62473 is a prime.

It is not a weakly prime, because it can be changed into another prime (16839619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8419844 + 8419845.

It is an arithmetic number, because the mean of its divisors is an integer number (8419845).

Almost surely, 2^16839689 is an apocalyptic number.

It is an amenable number.

16839689 is a deficient number, since it is larger than the sum of its proper divisors (1).

16839689 is an equidigital number, since it uses as much as digits as its factorization.

16839689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 50.

The square root of 16839689 is about 4103.6190125303. The cubic root of 16839689 is about 256.3173605186.

The spelling of 16839689 in words is "sixteen million, eight hundred thirty-nine thousand, six hundred eighty-nine".