105489844 has 12 divisors (see below), whose sum is σ = 184828644. Its totient is φ = 52681664.

The previous prime is 105489833. The next prime is 105489847. The reversal of 105489844 is 448984501.

It can be written as a sum of positive squares in 2 ways, for example, as 54937744 + 50552100 = 7412^2 + 7110^2 .

It is a super-2 number, since 2×105489844² = 22256214374288672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105489844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105489847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11959 + ... + 18814.

It is an arithmetic number, because the mean of its divisors is an integer number (15402387).

Almost surely, 2^105489844 is an apocalyptic number.

It is an amenable number.

105489844 is a deficient number, since it is larger than the sum of its proper divisors (79338800).

105489844 is a wasteful number, since it uses less digits than its factorization.

105489844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31634 (or 31632 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 105489844 is about 10270.8248938437. The cubic root of 105489844 is about 472.5018900104.

The spelling of 105489844 in words is "one hundred five million, four hundred eighty-nine thousand, eight hundred forty-four".