89899899 has 8 divisors (see below), whose sum is σ = 123106320. Its totient is φ = 58313376.

The previous prime is 89899897. The next prime is 89899933. The reversal of 89899899 is 99899898.

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

It is not a de Polignac number, because 89899899 - 2¹ = 89899897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89899897) 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 7 ways as a sum of consecutive naturals, for example, 404844 + ... + 405065.

It is an arithmetic number, because the mean of its divisors is an integer number (15388290).

Almost surely, 2^89899899 is an apocalyptic number.

89899899 is a deficient number, since it is larger than the sum of its proper divisors (33206421).

89899899 is a wasteful number, since it uses less digits than its factorization.

89899899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809949.

The product of its digits is 30233088, while the sum is 69.

The square root of 89899899 is about 9481.5557267782. Note that the first 3 decimals coincide. The cubic root of 89899899 is about 447.9742674288.

Subtracting 89899899 from its reverse (99899898), we obtain a palindrome (9999999).

The spelling of 89899899 in words is "eighty-nine million, eight hundred ninety-nine thousand, eight hundred ninety-nine".