89799999 has 16 divisors (see below), whose sum is σ = 123244032. Its totient is φ = 58118688.

The previous prime is 89799989. The next prime is 89800063. The reversal of 89799999 is 99999798.

It is not a de Polignac number, because 89799999 - 2¹⁵ = 89767231 is a prime.

89799999 is a modest number, since divided by 9999 gives 8979 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89799949) 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 15 ways as a sum of consecutive naturals, for example, 90862 + ... + 91844.

It is an arithmetic number, because the mean of its divisors is an integer number (7702752).

Almost surely, 2^89799999 is an apocalyptic number.

89799999 is a deficient number, since it is larger than the sum of its proper divisors (33444033).

89799999 is a wasteful number, since it uses less digits than its factorization.

89799999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846.

The product of its digits is 29760696, while the sum is 69.

The square root of 89799999 is about 9476.2861396224. The cubic root of 89799999 is about 447.8082708890.

The spelling of 89799999 in words is "eighty-nine million, seven hundred ninety-nine thousand, nine hundred ninety-nine".