858006899 has 2 divisors, whose sum is σ = 858006900. Its totient is φ = 858006898.

The previous prime is 858006839. The next prime is 858006931. The reversal of 858006899 is 998600858.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-858006899 is a prime.

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 858006899.

It is not a weakly prime, because it can be changed into another prime (858006839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429003449 + 429003450.

It is an arithmetic number, because the mean of its divisors is an integer number (429003450).

Almost surely, 2^858006899 is an apocalyptic number.

858006899 is a deficient number, since it is larger than the sum of its proper divisors (1).

858006899 is an equidigital number, since it uses as much as digits as its factorization.

858006899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The square root of 858006899 is about 29291.7547955052. The cubic root of 858006899 is about 950.2333310521.

The spelling of 858006899 in words is "eight hundred fifty-eight million, six thousand, eight hundred ninety-nine".