105443009 has 16 divisors (see below), whose sum is σ = 124257408. Its totient is φ = 87599232.

The previous prime is 105442999. The next prime is 105443011. The reversal of 105443009 is 900344501.

It is not a de Polignac number, because 105443009 - 2²⁴ = 88665793 is a prime.

It is a super-2 number, since 2×105443009² = 22236456293948162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105443209) 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 15 ways as a sum of consecutive naturals, for example, 39959 + ... + 42515.

It is an arithmetic number, because the mean of its divisors is an integer number (7766088).

Almost surely, 2^105443009 is an apocalyptic number.

It is an amenable number.

105443009 is a deficient number, since it is larger than the sum of its proper divisors (18814399).

105443009 is a wasteful number, since it uses less digits than its factorization.

105443009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 105443009 is about 10268.5446388473. The cubic root of 105443009 is about 472.4319530984.

The spelling of 105443009 in words is "one hundred five million, four hundred forty-three thousand, nine".