2220443939 has 4 divisors (see below), whose sum is σ = 2537650224. Its totient is φ = 1903237656.

The previous prime is 2220443923. The next prime is 2220443947. The reversal of 2220443939 is 9393440222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2220443939 - 2⁴ = 2220443923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220443909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158603132 + ... + 158603145.

It is an arithmetic number, because the mean of its divisors is an integer number (634412556).

Almost surely, 2^2220443939 is an apocalyptic number.

2220443939 is a deficient number, since it is larger than the sum of its proper divisors (317206285).

2220443939 is an equidigital number, since it uses as much as digits as its factorization.

2220443939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317206284.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 2220443939 is about 47121.5867623322. The cubic root of 2220443939 is about 1304.6077003265.

The spelling of 2220443939 in words is "two billion, two hundred twenty million, four hundred forty-three thousand, nine hundred thirty-nine".