99281923 has 6 divisors (see below), whose sum is σ = 107506644. Its totient is φ = 91644696.

The previous prime is 99281911. The next prime is 99281947. The reversal of 99281923 is 32918299.

It is not a de Polignac number, because 99281923 - 2⁵ = 99281891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99281923.

It is not an unprimeable number, because it can be changed into a prime (99281423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293565 + ... + 293902.

It is an arithmetic number, because the mean of its divisors is an integer number (17917774).

Almost surely, 2^99281923 is an apocalyptic number.

99281923 is a deficient number, since it is larger than the sum of its proper divisors (8224721).

99281923 is a wasteful number, since it uses less digits than its factorization.

99281923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587493 (or 587480 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 99281923 is about 9964.0314632181. The cubic root of 99281923 is about 463.0452073468.

The spelling of 99281923 in words is "ninety-nine million, two hundred eighty-one thousand, nine hundred twenty-three".