999253105 has 4 divisors (see below), whose sum is σ = 1199103732. Its totient is φ = 799402480.

The previous prime is 999253097. The next prime is 999253109. The reversal of 999253105 is 501352999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501352999 = 7 ⋅71621857.

It can be written as a sum of positive squares in 2 ways, for example, as 526060096 + 473193009 = 22936^2 + 21753^2 .

It is not a de Polignac number, because 999253105 - 2³ = 999253097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999253109) 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 3 ways as a sum of consecutive naturals, for example, 99925306 + ... + 99925315.

It is an arithmetic number, because the mean of its divisors is an integer number (299775933).

Almost surely, 2^999253105 is an apocalyptic number.

It is an amenable number.

999253105 is a deficient number, since it is larger than the sum of its proper divisors (199850627).

999253105 is a wasteful number, since it uses less digits than its factorization.

999253105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199850626.

The product of its (nonzero) digits is 109350, while the sum is 43.

The square root of 999253105 is about 31610.9649488908. The cubic root of 999253105 is about 999.7509729907.

The spelling of 999253105 in words is "nine hundred ninety-nine million, two hundred fifty-three thousand, one hundred five".