99223865 has 8 divisors (see below), whose sum is σ = 128227848. Its totient is φ = 73272960.

The previous prime is 99223847. The next prime is 99223879. The reversal of 99223865 is 56832299.

It can be written as a sum of positive squares in 4 ways, for example, as 21977344 + 77246521 = 4688^2 + 8789^2 .

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

It is not a de Polignac number, because 99223865 - 2⁶ = 99223801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 763196 + ... + 763325.

It is an arithmetic number, because the mean of its divisors is an integer number (16028481).

Almost surely, 2^99223865 is an apocalyptic number.

It is an amenable number.

99223865 is a deficient number, since it is larger than the sum of its proper divisors (29003983).

99223865 is a wasteful number, since it uses less digits than its factorization.

99223865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526539.

The product of its digits is 233280, while the sum is 44.

The square root of 99223865 is about 9961.1176581747. The cubic root of 99223865 is about 462.9549300173.

The spelling of 99223865 in words is "ninety-nine million, two hundred twenty-three thousand, eight hundred sixty-five".