16805879 has 2 divisors, whose sum is σ = 16805880. Its totient is φ = 16805878.

The previous prime is 16805869. The next prime is 16805891. The reversal of 16805879 is 97850861.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16805879 - 2²⁴ = 28663 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 (16805839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8402939 + 8402940.

It is an arithmetic number, because the mean of its divisors is an integer number (8402940).

Almost surely, 2^16805879 is an apocalyptic number.

16805879 is a deficient number, since it is larger than the sum of its proper divisors (1).

16805879 is an equidigital number, since it uses as much as digits as its factorization.

16805879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 16805879 is about 4099.4974082197. The cubic root of 16805879 is about 256.1457046122.

The spelling of 16805879 in words is "sixteen million, eight hundred five thousand, eight hundred seventy-nine".