100044403 has 4 divisors (see below), whose sum is σ = 103494240. Its totient is φ = 96594568.

The previous prime is 100044391. The next prime is 100044431. The reversal of 100044403 is 304440001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100044403 - 2⁹ = 100043891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100044433) 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 3 ways as a sum of consecutive naturals, for example, 1724875 + ... + 1724932.

It is an arithmetic number, because the mean of its divisors is an integer number (25873560).

Almost surely, 2^100044403 is an apocalyptic number.

100044403 is a deficient number, since it is larger than the sum of its proper divisors (3449837).

100044403 is an equidigital number, since it uses as much as digits as its factorization.

100044403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449836.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 100044403 is about 10002.2199036014. The cubic root of 100044403 is about 464.2275733518.

Adding to 100044403 its reverse (304440001), we get a palindrome (404484404).

The spelling of 100044403 in words is "one hundred million, forty-four thousand, four hundred three".