44441277721 has 3 divisors (see below), whose sum is σ = 44441488533. Its totient is φ = 44441066910.

The previous prime is 44441277709. The next prime is 44441277779. The reversal of 44441277721 is 12777214444.

The square root of 44441277721 is 210811.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 44441277721 - 2⁷ = 44441277593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44441275721) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 105406 + ... + 316216.

It is an arithmetic number, because the mean of its divisors is an integer number (14813829511).

Almost surely, 2^44441277721 is an apocalyptic number.

44441277721 is the 210811-st square number.

44441277721 is the 105406-th centered octagonal number.

It is an amenable number.

44441277721 is a deficient number, since it is larger than the sum of its proper divisors (210812).

44441277721 is an frugal number, since it uses more digits than its factorization.

44441277721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421622 (or 210811 counting only the distinct ones).

The product of its digits is 351232, while the sum is 43.

The spelling of 44441277721 in words is "forty-four billion, four hundred forty-one million, two hundred seventy-seven thousand, seven hundred twenty-one".