4087865989 has 2 divisors, whose sum is σ = 4087865990. Its totient is φ = 4087865988.

The previous prime is 4087865963. The next prime is 4087866001. The reversal of 4087865989 is 9895687804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3476045764 + 611820225 = 58958^2 + 24735^2 .

It is a cyclic number.

It is not a de Polignac number, because 4087865989 - 2⁷ = 4087865861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4087865989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4087865939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2043932994 + 2043932995.

It is an arithmetic number, because the mean of its divisors is an integer number (2043932995).

Almost surely, 2^4087865989 is an apocalyptic number.

It is an amenable number.

4087865989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4087865989 is an equidigital number, since it uses as much as digits as its factorization.

4087865989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34836480, while the sum is 64.

The square root of 4087865989 is about 63936.4214591339. The cubic root of 4087865989 is about 1598.9401821307.

The spelling of 4087865989 in words is "four billion, eighty-seven million, eight hundred sixty-five thousand, nine hundred eighty-nine".