99356789 has 16 divisors (see below), whose sum is σ = 123032448. Its totient is φ = 78285312.

The previous prime is 99356759. The next prime is 99356791. The reversal of 99356789 is 98765399.

It is not a de Polignac number, because 99356789 - 2²⁰ = 98308213 is a prime.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99356759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4592 + ... + 14825.

It is an arithmetic number, because the mean of its divisors is an integer number (7689528).

Almost surely, 2^99356789 is an apocalyptic number.

It is an amenable number.

99356789 is a deficient number, since it is larger than the sum of its proper divisors (23675659).

99356789 is a wasteful number, since it uses less digits than its factorization.

99356789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19484.

The product of its digits is 3674160, while the sum is 56.

The square root of 99356789 is about 9967.7875679611. The cubic root of 99356789 is about 463.1615683500.

The spelling of 99356789 in words is "ninety-nine million, three hundred fifty-six thousand, seven hundred eighty-nine".