2444189939 has 4 divisors (see below), whose sum is σ = 2455150656. Its totient is φ = 2433229224.

The previous prime is 2444189903. The next prime is 2444189987. The reversal of 2444189939 is 9399814442.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2444189939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2444189999) 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 3 ways as a sum of consecutive naturals, for example, 5480024 + ... + 5480469.

It is an arithmetic number, because the mean of its divisors is an integer number (613787664).

Almost surely, 2^2444189939 is an apocalyptic number.

2444189939 is a deficient number, since it is larger than the sum of its proper divisors (10960717).

2444189939 is a wasteful number, since it uses less digits than its factorization.

2444189939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10960716.

The product of its digits is 2239488, while the sum is 53.

The square root of 2444189939 is about 49438.7493672726. The cubic root of 2444189939 is about 1347.0332544520.

The spelling of 2444189939 in words is "two billion, four hundred forty-four million, one hundred eighty-nine thousand, nine hundred thirty-nine".