99999903 has 8 divisors (see below), whose sum is σ = 133392816. Its totient is φ = 66636800.

The previous prime is 99999847. The next prime is 99999931. The reversal of 99999903 is 30999999.

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 99999903 - 2⁶ = 99999839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999103) 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 7 ways as a sum of consecutive naturals, for example, 2143 + ... + 14303.

It is an arithmetic number, because the mean of its divisors is an integer number (16674102).

Almost surely, 2^99999903 is an apocalyptic number.

99999903 is a deficient number, since it is larger than the sum of its proper divisors (33392913).

99999903 is a wasteful number, since it uses less digits than its factorization.

99999903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14905.

The product of its (nonzero) digits is 1594323, while the sum is 57.

The square root of 99999903 is about 9999.9951499988. The cubic root of 99999903 is about 464.1587332832.

The spelling of 99999903 in words is "ninety-nine million, nine hundred ninety-nine thousand, nine hundred three".