3944951587 has 2 divisors, whose sum is σ = 3944951588. Its totient is φ = 3944951586.

The previous prime is 3944951561. The next prime is 3944951599. The reversal of 3944951587 is 7851594493.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3944951587 is a prime.

It is not a weakly prime, because it can be changed into another prime (3944951687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1972475793 + 1972475794.

It is an arithmetic number, because the mean of its divisors is an integer number (1972475794).

Almost surely, 2^3944951587 is an apocalyptic number.

3944951587 is a deficient number, since it is larger than the sum of its proper divisors (1).

3944951587 is an equidigital number, since it uses as much as digits as its factorization.

3944951587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 55.

The square root of 3944951587 is about 62808.8495914389. The cubic root of 3944951587 is about 1580.0853966288.

The spelling of 3944951587 in words is "three billion, nine hundred forty-four million, nine hundred fifty-one thousand, five hundred eighty-seven".