109549439 has 4 divisors (see below), whose sum is σ = 109902000. Its totient is φ = 109196880.

The previous prime is 109549403. The next prime is 109549457. The reversal of 109549439 is 934945901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934945901 = 19 ⋅49207679.

It is a cyclic number.

It is not a de Polignac number, because 109549439 - 2⁸ = 109549183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109549439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109542439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175814 + ... + 176435.

It is an arithmetic number, because the mean of its divisors is an integer number (27475500).

Almost surely, 2^109549439 is an apocalyptic number.

109549439 is a deficient number, since it is larger than the sum of its proper divisors (352561).

109549439 is an equidigital number, since it uses as much as digits as its factorization.

109549439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352560.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 109549439 is about 10466.5867884425. The cubic root of 109549439 is about 478.4869005024.

The spelling of 109549439 in words is "one hundred nine million, five hundred forty-nine thousand, four hundred thirty-nine".