99887023 has 2 divisors, whose sum is σ = 99887024. Its totient is φ = 99887022.

The previous prime is 99886993. The next prime is 99887027. The reversal of 99887023 is 32078899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99887023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99887027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49943511 + 49943512.

It is an arithmetic number, because the mean of its divisors is an integer number (49943512).

Almost surely, 2^99887023 is an apocalyptic number.

99887023 is a deficient number, since it is larger than the sum of its proper divisors (1).

99887023 is an equidigital number, since it uses as much as digits as its factorization.

99887023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 99887023 is about 9994.3495536228. The cubic root of 99887023 is about 463.9840198990.

The spelling of 99887023 in words is "ninety-nine million, eight hundred eighty-seven thousand, twenty-three".