99868945 has 8 divisors (see below), whose sum is σ = 130737600. Its totient is φ = 72631920.

The previous prime is 99868871. The next prime is 99868963. The reversal of 99868945 is 54986899.

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

It is not a de Polignac number, because 99868945 - 2¹⁹ = 99344657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99868945.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907845 + ... + 907954.

It is an arithmetic number, because the mean of its divisors is an integer number (16342200).

Almost surely, 2^99868945 is an apocalyptic number.

It is an amenable number.

99868945 is a deficient number, since it is larger than the sum of its proper divisors (30868655).

99868945 is a wasteful number, since it uses less digits than its factorization.

99868945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815815.

The product of its digits is 5598720, while the sum is 58.

The square root of 99868945 is about 9993.4451016654. The cubic root of 99868945 is about 463.9560269094.

It can be divided in two parts, 9986894 and 5, that added together give a palindrome (9986899).

The spelling of 99868945 in words is "ninety-nine million, eight hundred sixty-eight thousand, nine hundred forty-five".