999727997 has 8 divisors (see below), whose sum is σ = 1062766560. Its totient is φ = 937731600.

The previous prime is 999727987. The next prime is 999727999. The reversal of 999727997 is 799727999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999727997 - 2¹⁴ = 999711613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999727999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258563 + ... + 262400.

It is an arithmetic number, because the mean of its divisors is an integer number (132845820).

Almost surely, 2^999727997 is an apocalyptic number.

It is an amenable number.

999727997 is a deficient number, since it is larger than the sum of its proper divisors (63038563).

999727997 is a wasteful number, since it uses less digits than its factorization.

999727997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521083.

The product of its digits is 40507614, while the sum is 68.

The square root of 999727997 is about 31618.4755641381. The cubic root of 999727997 is about 999.9093241115.

The spelling of 999727997 in words is "nine hundred ninety-nine million, seven hundred twenty-seven thousand, nine hundred ninety-seven".