4391845441 has 3 divisors (see below), whose sum is σ = 4391911713. Its totient is φ = 4391779170.

The previous prime is 4391845439. The next prime is 4391845489. The reversal of 4391845441 is 1445481934.

The square root of 4391845441 is 66271.

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 4391845441 - 2¹ = 4391845439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4391845541) 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, 33136 + ... + 99406.

It is an arithmetic number, because the mean of its divisors is an integer number (1463970571).

Almost surely, 2^4391845441 is an apocalyptic number.

4391845441 is the 66271-st square number.

4391845441 is the 33136-th centered octagonal number.

It is an amenable number.

4391845441 is a deficient number, since it is larger than the sum of its proper divisors (66272).

4391845441 is an frugal number, since it uses more digits than its factorization.

4391845441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132542 (or 66271 counting only the distinct ones).

The product of its digits is 276480, while the sum is 43.

The cubic root of 4391845441 is about 1637.6296116042.

The spelling of 4391845441 in words is "four billion, three hundred ninety-one million, eight hundred forty-five thousand, four hundred forty-one".