8991662039 has 2 divisors, whose sum is σ = 8991662040. Its totient is φ = 8991662038.

The previous prime is 8991661993. The next prime is 8991662047. The reversal of 8991662039 is 9302661998.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8991662039 - 2¹⁶ = 8991596503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8991662089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4495831019 + 4495831020.

It is an arithmetic number, because the mean of its divisors is an integer number (4495831020).

Almost surely, 2^8991662039 is an apocalyptic number.

8991662039 is a deficient number, since it is larger than the sum of its proper divisors (1).

8991662039 is an equidigital number, since it uses as much as digits as its factorization.

8991662039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 8991662039 is about 94824.3747092487. The cubic root of 8991662039 is about 2079.4412668850.

The spelling of 8991662039 in words is "eight billion, nine hundred ninety-one million, six hundred sixty-two thousand, thirty-nine".