999101023 has 2 divisors, whose sum is σ = 999101024. Its totient is φ = 999101022.

The previous prime is 999101017. The next prime is 999101083. The reversal of 999101023 is 320101999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999101023 - 2⁹ = 999100511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999101023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999101083) 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, 499550511 + 499550512.

It is an arithmetic number, because the mean of its divisors is an integer number (499550512).

Almost surely, 2^999101023 is an apocalyptic number.

999101023 is a deficient number, since it is larger than the sum of its proper divisors (1).

999101023 is an equidigital number, since it uses as much as digits as its factorization.

999101023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 999101023 is about 31608.5593312951. The cubic root of 999101023 is about 999.7002511596.

The spelling of 999101023 in words is "nine hundred ninety-nine million, one hundred one thousand, twenty-three".