999989162797327 has 4 divisors (see below), whose sum is σ = 999989241853840. Its totient is φ = 999989083740816.

The previous prime is 999989162797277. The next prime is 999989162797337. The reversal of 999989162797327 is 723797261989999.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 4-Lehmer number, since φ(999989162797327) divides (999989162797327-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999989162797327 is a prime.

It is a deceptive number, since it divides R_{999989162797326}.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999989162797337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15811302 + ... + 47433907.

It is an arithmetic number, because the mean of its divisors is an integer number (249997310463460).

It is a Poulet number, since it divides 2^{999989162797326}-1.

Almost surely, 2^{999989162797327} is an apocalyptic number.

999989162797327 is the 15811303-rd decagonal number.

999989162797327 is a deficient number, since it is larger than the sum of its proper divisors (79056513).

999989162797327 is a wasteful number, since it uses less digits than its factorization.

999989162797327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79056512.

The product of its digits is 104995735488, while the sum is 97.

The spelling of 999989162797327 in words is "nine hundred ninety-nine trillion, nine hundred eighty-nine billion, one hundred sixty-two million, seven hundred ninety-seven thousand, three hundred twenty-seven".