4144331987 has 2 divisors, whose sum is σ = 4144331988. Its totient is φ = 4144331986.

The previous prime is 4144331941. The next prime is 4144332067. The reversal of 4144331987 is 7891334414.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4144331987 - 2⁶ = 4144331923 is a prime.

It is not a weakly prime, because it can be changed into another prime (4144339987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2072165993 + 2072165994.

It is an arithmetic number, because the mean of its divisors is an integer number (2072165994).

Almost surely, 2^4144331987 is an apocalyptic number.

4144331987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4144331987 is an equidigital number, since it uses as much as digits as its factorization.

4144331987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 44.

The square root of 4144331987 is about 64376.4862896384. The cubic root of 4144331987 is about 1606.2686355300.

The spelling of 4144331987 in words is "four billion, one hundred forty-four million, three hundred thirty-one thousand, nine hundred eighty-seven".