8933019989 has 2 divisors, whose sum is σ = 8933019990. Its totient is φ = 8933019988.

The previous prime is 8933019967. The next prime is 8933020013. The reversal of 8933019989 is 9899103398.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5312952100 + 3620067889 = 72890^2 + 60167^2 .

It is a cyclic number.

It is not a de Polignac number, because 8933019989 - 2²⁰ = 8931971413 is a prime.

It is a super-2 number, since 2×8933019989² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8933019919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4466509994 + 4466509995.

It is an arithmetic number, because the mean of its divisors is an integer number (4466509995).

Almost surely, 2^8933019989 is an apocalyptic number.

It is an amenable number.

8933019989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8933019989 is an equidigital number, since it uses as much as digits as its factorization.

8933019989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3779136, while the sum is 59.

The square root of 8933019989 is about 94514.6548901280. The cubic root of 8933019989 is about 2074.9108193346.

The spelling of 8933019989 in words is "eight billion, nine hundred thirty-three million, nineteen thousand, nine hundred eighty-nine".