999103 has 8 divisors (see below), whose sum is σ = 1163808. Its totient is φ = 839904.

The previous prime is 999101. The next prime is 999133. The reversal of 999103 is 301999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999103 - 2¹ = 999101 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 976 + ... + 1717.

It is an arithmetic number, because the mean of its divisors is an integer number (145476).

2⁹⁹⁹¹⁰³ is an apocalyptic number.

999103 is a deficient number, since it is larger than the sum of its proper divisors (164705).

999103 is a wasteful number, since it uses less digits than its factorization.

999103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 999103 is about 999.5513993787. The cubic root of 999103 is about 99.9700910554.

The spelling of 999103 in words is "nine hundred ninety-nine thousand, one hundred three".