99999727 has 4 divisors (see below), whose sum is σ = 100020256. Its totient is φ = 99979200.

The previous prime is 99999721. The next prime is 99999773. The reversal of 99999727 is 72799999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72799999 = 139 ⋅523741.

It is a cyclic number.

It is not a de Polignac number, because 99999727 - 2¹¹ = 99997679 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 (99999721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1663 + ... + 14239.

It is an arithmetic number, because the mean of its divisors is an integer number (25005064).

Almost surely, 2^99999727 is an apocalyptic number.

99999727 is a deficient number, since it is larger than the sum of its proper divisors (20529).

99999727 is a wasteful number, since it uses less digits than its factorization.

99999727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20528.

The product of its digits is 5786802, while the sum is 61.

The square root of 99999727 is about 9999.9863499907. The cubic root of 99999727 is about 464.1584609763.

The spelling of 99999727 in words is "ninety-nine million, nine hundred ninety-nine thousand, seven hundred twenty-seven".