3220244991 has 24 divisors (see below), whose sum is σ = 4826465280. Its totient is φ = 2145618072.

The previous prime is 3220244983. The next prime is 3220245023. The reversal of 3220244991 is 1994420223.

3220244991 is a `hidden beast` number, since 3 + 2 + 202 + 449 + 9 + 1 = 666.

It is not a de Polignac number, because 3220244991 - 2³ = 3220244983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220244891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 697296 + ... + 701898.

It is an arithmetic number, because the mean of its divisors is an integer number (201102720).

Almost surely, 2^3220244991 is an apocalyptic number.

3220244991 is a deficient number, since it is larger than the sum of its proper divisors (1606220289).

3220244991 is an equidigital number, since it uses as much as digits as its factorization.

3220244991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7497 (or 7485 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 3220244991 is about 56747.2024949248. The cubic root of 3220244991 is about 1476.7137015412.

The spelling of 3220244991 in words is "three billion, two hundred twenty million, two hundred forty-four thousand, nine hundred ninety-one".