4421851009 has 9 divisors (see below), whose sum is σ = 4581584553. Its totient is φ = 4267511472.

The previous prime is 4421850959. The next prime is 4421851033. The reversal of 4421851009 is 9001581244.

It is a happy number.

The square root of 4421851009 is 66497.

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

It can be written as a sum of positive squares in 4 ways, for example, as 161417025 + 4260433984 = 12705^2 + 65272^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4421851009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4421851099) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1927267 + ... + 1929559.

Almost surely, 2^4421851009 is an apocalyptic number.

4421851009 is the 66497-th square number.

4421851009 is the 33249-th centered octagonal number.

It is an amenable number.

4421851009 is a deficient number, since it is larger than the sum of its proper divisors (159733544).

4421851009 is an frugal number, since it uses more digits than its factorization.

4421851009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644 (or 2322 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The cubic root of 4421851009 is about 1641.3506384287.

The spelling of 4421851009 in words is "four billion, four hundred twenty-one million, eight hundred fifty-one thousand, nine".