105444589 has 2 divisors, whose sum is σ = 105444590. Its totient is φ = 105444588.

The previous prime is 105444587. The next prime is 105444637. The reversal of 105444589 is 985444501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64931364 + 40513225 = 8058^2 + 6365^2 .

It is an emirp because it is prime and its reverse (985444501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105444589 - 2¹ = 105444587 is a prime.

It is a super-2 number, since 2×105444589² = 22237122698757842, which contains 22 as substring.

Together with 105444587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105444587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52722294 + 52722295.

It is an arithmetic number, because the mean of its divisors is an integer number (52722295).

Almost surely, 2^105444589 is an apocalyptic number.

It is an amenable number.

105444589 is a deficient number, since it is larger than the sum of its proper divisors (1).

105444589 is an equidigital number, since it uses as much as digits as its factorization.

105444589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 105444589 is about 10268.6215725384. The cubic root of 105444589 is about 472.4343127894.

The spelling of 105444589 in words is "one hundred five million, four hundred forty-four thousand, five hundred eighty-nine".