858218099 has 2 divisors, whose sum is σ = 858218100. Its totient is φ = 858218098.

The previous prime is 858218093. The next prime is 858218131. The reversal of 858218099 is 990812858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 858218099 - 2¹² = 858214003 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (858218093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429109049 + 429109050.

It is an arithmetic number, because the mean of its divisors is an integer number (429109050).

Almost surely, 2^858218099 is an apocalyptic number.

858218099 is a deficient number, since it is larger than the sum of its proper divisors (1).

858218099 is an equidigital number, since it uses as much as digits as its factorization.

858218099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 50.

The square root of 858218099 is about 29295.3596837451. The cubic root of 858218099 is about 950.3112918919.

The spelling of 858218099 in words is "eight hundred fifty-eight million, two hundred eighteen thousand, ninety-nine".