4043220445 has 24 divisors (see below), whose sum is σ = 5388099192. Its totient is φ = 2910167040.

The previous prime is 4043220437. The next prime is 4043220451. The reversal of 4043220445 is 5440223404.

It can be written as a sum of positive squares in 4 ways, for example, as 312087556 + 3731132889 = 17666^2 + 61083^2 .

It is not a de Polignac number, because 4043220445 - 2³ = 4043220437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24237 + ... + 93133.

It is an arithmetic number, because the mean of its divisors is an integer number (224504133).

Almost surely, 2^4043220445 is an apocalyptic number.

It is an amenable number.

4043220445 is a deficient number, since it is larger than the sum of its proper divisors (1344878747).

4043220445 is a wasteful number, since it uses less digits than its factorization.

4043220445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69021 (or 69010 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 4043220445 is about 63586.3227824978. The cubic root of 4043220445 is about 1593.0979308232.

Adding to 4043220445 its reverse (5440223404), we get a palindrome (9483443849).

The spelling of 4043220445 in words is "four billion, forty-three million, two hundred twenty thousand, four hundred forty-five".