109999903 has 12 divisors (see below), whose sum is σ = 120007008. Its totient is φ = 100776000.

The previous prime is 109999889. The next prime is 109999913. The reversal of 109999903 is 309999901.

It is not a de Polignac number, because 109999903 - 2⁹ = 109999391 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 (109999913) 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 11 ways as a sum of consecutive naturals, for example, 20778 + ... + 25528.

It is an arithmetic number, because the mean of its divisors is an integer number (10000584).

Almost surely, 2^109999903 is an apocalyptic number.

109999903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

109999903 is a deficient number, since it is larger than the sum of its proper divisors (10007105).

109999903 is a wasteful number, since it uses less digits than its factorization.

109999903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914 (or 4901 counting only the distinct ones).

The product of its (nonzero) digits is 177147, while the sum is 49.

The square root of 109999903 is about 10488.0838574069. The cubic root of 109999903 is about 479.1418448675.

It can be divided in two parts, 10999 and 9903, that added together give a palindrome (20902).

The spelling of 109999903 in words is "one hundred nine million, nine hundred ninety-nine thousand, nine hundred three".