109440545 has 4 divisors (see below), whose sum is σ = 131328660. Its totient is φ = 87552432.

The previous prime is 109440523. The next prime is 109440553. The reversal of 109440545 is 545044901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545044901 = 3203 ⋅170167.

It can be written as a sum of positive squares in 2 ways, for example, as 44782864 + 64657681 = 6692^2 + 8041^2 .

It is a cyclic number.

It is not a de Polignac number, because 109440545 - 2¹⁰ = 109439521 is a prime.

It is an unprimeable number.

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, 10944050 + ... + 10944059.

It is an arithmetic number, because the mean of its divisors is an integer number (32832165).

Almost surely, 2^109440545 is an apocalyptic number.

It is an amenable number.

109440545 is a deficient number, since it is larger than the sum of its proper divisors (21888115).

109440545 is an equidigital number, since it uses as much as digits as its factorization.

109440545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21888114.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 109440545 is about 10461.3835127100. The cubic root of 109440545 is about 478.3283065782.

The spelling of 109440545 in words is "one hundred nine million, four hundred forty thousand, five hundred forty-five".