999600879 has 4 divisors (see below), whose sum is σ = 1332801176. Its totient is φ = 666400584.

The previous prime is 999600853. The next prime is 999600883. The reversal of 999600879 is 978006999.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 999600879 - 2⁹ = 999600367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999600809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166600144 + ... + 166600149.

It is an arithmetic number, because the mean of its divisors is an integer number (333200294).

Almost surely, 2^999600879 is an apocalyptic number.

999600879 is a deficient number, since it is larger than the sum of its proper divisors (333200297).

999600879 is a wasteful number, since it uses less digits than its factorization.

999600879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333200296.

The product of its (nonzero) digits is 2204496, while the sum is 57.

The square root of 999600879 is about 31616.4653147691. The cubic root of 999600879 is about 999.8669419630.

The spelling of 999600879 in words is "nine hundred ninety-nine million, six hundred thousand, eight hundred seventy-nine".