3987344633 has 2 divisors, whose sum is σ = 3987344634. Its totient is φ = 3987344632.

The previous prime is 3987344623. The next prime is 3987344659. The reversal of 3987344633 is 3364437893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3940449529 + 46895104 = 62773^2 + 6848^2 .

It is a cyclic number.

It is not a de Polignac number, because 3987344633 - 2²⁴ = 3970567417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3987344623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993672316 + 1993672317.

It is an arithmetic number, because the mean of its divisors is an integer number (1993672317).

Almost surely, 2^3987344633 is an apocalyptic number.

It is an amenable number.

3987344633 is a deficient number, since it is larger than the sum of its proper divisors (1).

3987344633 is an equidigital number, since it uses as much as digits as its factorization.

3987344633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 50.

The square root of 3987344633 is about 63145.4244819053. The cubic root of 3987344633 is about 1585.7251880935.

The spelling of 3987344633 in words is "three billion, nine hundred eighty-seven million, three hundred forty-four thousand, six hundred thirty-three".