999555003 has 12 divisors (see below), whose sum is σ = 1445329080. Its totient is φ = 665665056.

The previous prime is 999554989. The next prime is 999555019. The reversal of 999555003 is 300555999.

999555003 is a `hidden beast` number, since 9 + 9 + 95 + 550 + 0 + 3 = 666.

It is not a de Polignac number, because 999555003 - 2⁶ = 999554939 is a prime.

It is a super-2 number, since 2×999555003² = 1998220408044660018, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 999555003.

It is not an unprimeable number, because it can be changed into a prime (999555023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49693 + ... + 66846.

It is an arithmetic number, because the mean of its divisors is an integer number (120444090).

Almost surely, 2^999555003 is an apocalyptic number.

999555003 is a deficient number, since it is larger than the sum of its proper divisors (445774077).

999555003 is a wasteful number, since it uses less digits than its factorization.

999555003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117498 (or 117495 counting only the distinct ones).

The product of its (nonzero) digits is 273375, while the sum is 45.

The square root of 999555003 is about 31615.7397983979. The cubic root of 999555003 is about 999.8516456587.

The spelling of 999555003 in words is "nine hundred ninety-nine million, five hundred fifty-five thousand, three".