109448639 has 8 divisors (see below), whose sum is σ = 115985520. Its totient is φ = 103096000.

The previous prime is 109448629. The next prime is 109448663. The reversal of 109448639 is 936844901.

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-109448639 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 109448639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109448629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44837 + ... + 47214.

It is an arithmetic number, because the mean of its divisors is an integer number (14498190).

Almost surely, 2^109448639 is an apocalyptic number.

109448639 is a deficient number, since it is larger than the sum of its proper divisors (6536881).

109448639 is an equidigital number, since it uses as much as digits as its factorization.

109448639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92121.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 109448639 is about 10461.7703568756. The cubic root of 109448639 is about 478.3400983502.

The spelling of 109448639 in words is "one hundred nine million, four hundred forty-eight thousand, six hundred thirty-nine".