999078003 has 108 divisors (see below), whose sum is σ = 1916780040. Its totient is φ = 512431920.

The previous prime is 999077999. The next prime is 999078023. The reversal of 999078003 is 300870999.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 999078003 - 2² = 999077999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999078003.

It is not an unprimeable number, because it can be changed into a prime (999078023) 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 107 ways as a sum of consecutive naturals, for example, 12646518 + ... + 12646596.

Almost surely, 2^999078003 is an apocalyptic number.

999078003 is a deficient number, since it is larger than the sum of its proper divisors (917702037).

999078003 is a wasteful number, since it uses less digits than its factorization.

999078003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 999078003 is about 31608.1951873244. The cubic root of 999078003 is about 999.6925731651.

The spelling of 999078003 in words is "nine hundred ninety-nine million, seventy-eight thousand, three".