99999927 has 20 divisors (see below), whose sum is σ = 150574336. Its totient is φ = 66134880.

The previous prime is 99999847. The next prime is 99999931. The reversal of 99999927 is 72999999.

It is not a de Polignac number, because 99999927 - 2¹¹ = 99997879 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 (99999827) 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 in 19 ways as a sum of consecutive naturals, for example, 5427 + ... + 15147.

Almost surely, 2^99999927 is an apocalyptic number.

99999927 is a deficient number, since it is larger than the sum of its proper divisors (50574409).

99999927 is a wasteful number, since it uses less digits than its factorization.

99999927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860 (or 9851 counting only the distinct ones).

The product of its digits is 7440174, while the sum is 63.

The square root of 99999927 is about 9999.9963499993. The cubic root of 99999927 is about 464.1587704159.

It can be divided in two parts, 9999992 and 7, that added together give a palindrome (9999999).

The spelling of 99999927 in words is "ninety-nine million, nine hundred ninety-nine thousand, nine hundred twenty-seven".