999117323 has 2 divisors, whose sum is σ = 999117324. Its totient is φ = 999117322.

The previous prime is 999117313. The next prime is 999117359. The reversal of 999117323 is 323711999.

999117323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999117323 - 2⁴ = 999117307 is a prime.

It is not a weakly prime, because it can be changed into another prime (999117313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499558661 + 499558662.

It is an arithmetic number, because the mean of its divisors is an integer number (499558662).

Almost surely, 2^999117323 is an apocalyptic number.

999117323 is a deficient number, since it is larger than the sum of its proper divisors (1).

999117323 is an equidigital number, since it uses as much as digits as its factorization.

999117323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 44.

The square root of 999117323 is about 31608.8171717956. The cubic root of 999117323 is about 999.7056877221.

The spelling of 999117323 in words is "nine hundred ninety-nine million, one hundred seventeen thousand, three hundred twenty-three".