109288439 has 8 divisors (see below), whose sum is σ = 118186992. Its totient is φ = 100460160.

The previous prime is 109288391. The next prime is 109288451. The reversal of 109288439 is 934882901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109288439 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 109288439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109288339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14309 + ... + 20574.

It is an arithmetic number, because the mean of its divisors is an integer number (14773374).

Almost surely, 2^109288439 is an apocalyptic number.

109288439 is a deficient number, since it is larger than the sum of its proper divisors (8898553).

109288439 is a wasteful number, since it uses less digits than its factorization.

109288439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35137.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 109288439 is about 10454.1111052064. Note that the first 4 decimals coincide. The cubic root of 109288439 is about 478.1066022169.

The spelling of 109288439 in words is "one hundred nine million, two hundred eighty-eight thousand, four hundred thirty-nine".