2859398891 has 2 divisors, whose sum is σ = 2859398892. Its totient is φ = 2859398890.

The previous prime is 2859398881. The next prime is 2859398911. The reversal of 2859398891 is 1988939582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2859398891 - 2¹⁰ = 2859397867 is a prime.

It is not a weakly prime, because it can be changed into another prime (2859398881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1429699445 + 1429699446.

It is an arithmetic number, because the mean of its divisors is an integer number (1429699446).

Almost surely, 2^2859398891 is an apocalyptic number.

2859398891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2859398891 is an equidigital number, since it uses as much as digits as its factorization.

2859398891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 62.

The square root of 2859398891 is about 53473.3474826478. The cubic root of 2859398891 is about 1419.3567957506.

The spelling of 2859398891 in words is "two billion, eight hundred fifty-nine million, three hundred ninety-eight thousand, eight hundred ninety-one".