2199859 has 2 divisors, whose sum is σ = 2199860. Its totient is φ = 2199858.

The previous prime is 2199833. The next prime is 2199889. The reversal of 2199859 is 9589912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2199859 - 2¹⁵ = 2167091 is a prime.

2199859 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2199889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099929 + 1099930.

It is an arithmetic number, because the mean of its divisors is an integer number (1099930).

2^2199859 is an apocalyptic number.

2199859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2199859 is an equidigital number, since it uses as much as digits as its factorization.

2199859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 43.

The square root of 2199859 is about 1483.1921655672. The cubic root of 2199859 is about 130.0563660895.

The spelling of 2199859 in words is "two million, one hundred ninety-nine thousand, eight hundred fifty-nine".