109443442 has 4 divisors (see below), whose sum is σ = 164165166. Its totient is φ = 54721720.

The previous prime is 109443431. The next prime is 109443443. The reversal of 109443442 is 244344901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244344901 = 59 ⋅4141439.

It can be written as a sum of positive squares in only one way, i.e., 95238081 + 14205361 = 9759^2 + 3769^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (109443443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27360859 + ... + 27360862.

Almost surely, 2^109443442 is an apocalyptic number.

109443442 is a deficient number, since it is larger than the sum of its proper divisors (54721724).

109443442 is an equidigital number, since it uses as much as digits as its factorization.

109443442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54721723.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 109443442 is about 10461.5219734033. The cubic root of 109443442 is about 478.3325271495.

The spelling of 109443442 in words is "one hundred nine million, four hundred forty-three thousand, four hundred forty-two".