105844859 has 2 divisors, whose sum is σ = 105844860. Its totient is φ = 105844858.

The previous prime is 105844853. The next prime is 105844861. The reversal of 105844859 is 958448501.

It is a strong prime.

It is an emirp because it is prime and its reverse (958448501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105844859 - 2⁸ = 105844603 is a prime.

It is a super-2 number, since 2×105844859² = 22406268353459762, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 105844861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105844853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52922429 + 52922430.

It is an arithmetic number, because the mean of its divisors is an integer number (52922430).

Almost surely, 2^105844859 is an apocalyptic number.

105844859 is a deficient number, since it is larger than the sum of its proper divisors (1).

105844859 is an equidigital number, since it uses as much as digits as its factorization.

105844859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 105844859 is about 10288.0930691747. The cubic root of 105844859 is about 473.0313483507.

The spelling of 105844859 in words is "one hundred five million, eight hundred forty-four thousand, eight hundred fifty-nine".