2220003991 has 2 divisors, whose sum is σ = 2220003992. Its totient is φ = 2220003990.

The previous prime is 2220003977. The next prime is 2220004051. The reversal of 2220003991 is 1993000222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2220003991 - 2⁹ = 2220003479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220003091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110001995 + 1110001996.

It is an arithmetic number, because the mean of its divisors is an integer number (1110001996).

Almost surely, 2^2220003991 is an apocalyptic number.

2220003991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220003991 is an equidigital number, since it uses as much as digits as its factorization.

2220003991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2220003991 is about 47116.9183096688. The cubic root of 2220003991 is about 1304.5215317531.

The spelling of 2220003991 in words is "two billion, two hundred twenty million, three thousand, nine hundred ninety-one".