99999929 has 4 divisors (see below), whose sum is σ = 104347776. Its totient is φ = 95652084.

The previous prime is 99999847. The next prime is 99999931. The reversal of 99999929 is 92999999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92999999 = 109 ⋅853211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99999929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99999959) 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, 2173889 + ... + 2173934.

It is an arithmetic number, because the mean of its divisors is an integer number (26086944).

Almost surely, 2^99999929 is an apocalyptic number.

It is an amenable number.

99999929 is a deficient number, since it is larger than the sum of its proper divisors (4347847).

99999929 is a wasteful number, since it uses less digits than its factorization.

99999929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4347846.

The product of its digits is 9565938, while the sum is 65.

The square root of 99999929 is about 9999.9964499994. The cubic root of 99999929 is about 464.1587735103.

It can be divided in two parts, 9999992 and 9, that added together give a palindrome (10000001).

The spelling of 99999929 in words is "ninety-nine million, nine hundred ninety-nine thousand, nine hundred twenty-nine".