2444443987 has 2 divisors, whose sum is σ = 2444443988. Its totient is φ = 2444443986.

The previous prime is 2444443949. The next prime is 2444444011. The reversal of 2444443987 is 7893444442.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2444443987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2444443987.

It is not a weakly prime, because it can be changed into another prime (2444443907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222221993 + 1222221994.

It is an arithmetic number, because the mean of its divisors is an integer number (1222221994).

Almost surely, 2^2444443987 is an apocalyptic number.

2444443987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2444443987 is an equidigital number, since it uses as much as digits as its factorization.

2444443987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 49.

The square root of 2444443987 is about 49441.3186211695. The cubic root of 2444443987 is about 1347.0799228448.

The spelling of 2444443987 in words is "two billion, four hundred forty-four million, four hundred forty-three thousand, nine hundred eighty-seven".