2221444487 has 2 divisors, whose sum is σ = 2221444488. Its totient is φ = 2221444486.

The previous prime is 2221444481. The next prime is 2221444579. The reversal of 2221444487 is 7844441222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221444487 - 2¹² = 2221440391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221444487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221444481) 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, 1110722243 + 1110722244.

It is an arithmetic number, because the mean of its divisors is an integer number (1110722244).

Almost surely, 2^2221444487 is an apocalyptic number.

2221444487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221444487 is an equidigital number, since it uses as much as digits as its factorization.

2221444487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 114688, while the sum is 38.

The square root of 2221444487 is about 47132.2022294736. The cubic root of 2221444487 is about 1304.8036261035.

The spelling of 2221444487 in words is "two billion, two hundred twenty-one million, four hundred forty-four thousand, four hundred eighty-seven".