9123020087 has 2 divisors, whose sum is σ = 9123020088. Its totient is φ = 9123020086.

The previous prime is 9123019999. The next prime is 9123020089. The reversal of 9123020087 is 7800203219.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9123020087 is a prime.

Together with 9123020089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9123020089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4561510043 + 4561510044.

It is an arithmetic number, because the mean of its divisors is an integer number (4561510044).

Almost surely, 2^9123020087 is an apocalyptic number.

9123020087 is a deficient number, since it is larger than the sum of its proper divisors (1).

9123020087 is an equidigital number, since it uses as much as digits as its factorization.

9123020087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 9123020087 is about 95514.5019722136. The cubic root of 9123020087 is about 2089.5184506737.

The spelling of 9123020087 in words is "nine billion, one hundred twenty-three million, twenty thousand, eighty-seven".