109453443 has 16 divisors (see below), whose sum is σ = 159722496. Its totient is φ = 66119840.

The previous prime is 109453417. The next prime is 109453451. The reversal of 109453443 is 344354901.

It is a Cunningham number, because it is equal to 10462²-1.

It is a cyclic number.

It is not a de Polignac number, because 109453443 - 2²² = 105259139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (109453483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5230 + ... + 15692.

It is an arithmetic number, because the mean of its divisors is an integer number (9982656).

Almost surely, 2^109453443 is an apocalyptic number.

109453443 is a deficient number, since it is larger than the sum of its proper divisors (50269053).

109453443 is a wasteful number, since it uses less digits than its factorization.

109453443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10794.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 109453443 is about 10461.9999522080. Note that the first 4 decimals coincide. The cubic root of 109453443 is about 478.3470967994.

Subtracting from 109453443 its sum of digits (33), we obtain a triangular number (109453410 = T₁₄₇₉₅).

The spelling of 109453443 in words is "one hundred nine million, four hundred fifty-three thousand, four hundred forty-three".