999113 has 4 divisors (see below), whose sum is σ = 1011840. Its totient is φ = 986388.

The previous prime is 999101. The next prime is 999133. The reversal of 999113 is 311999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 311999 = 19 ⋅16421.

It is a cyclic number.

It is not a de Polignac number, because 999113 - 2⁶ = 999049 is a prime.

It is an Ulam number.

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 999113.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 999113.

It is not an unprimeable number, because it can be changed into a prime (999133) 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 3 ways as a sum of consecutive naturals, for example, 6245 + ... + 6402.

It is an arithmetic number, because the mean of its divisors is an integer number (252960).

2⁹⁹⁹¹¹³ is an apocalyptic number.

It is an amenable number.

999113 is a deficient number, since it is larger than the sum of its proper divisors (12727).

999113 is a wasteful number, since it uses less digits than its factorization.

999113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12726.

The product of its digits is 2187, while the sum is 32.

The square root of 999113 is about 999.5564016102. The cubic root of 999113 is about 99.9704245871.

The spelling of 999113 in words is "nine hundred ninety-nine thousand, one hundred thirteen".