100044405 has 48 divisors (see below), whose sum is σ = 193302720. Its totient is φ = 47568384.

The previous prime is 100044391. The next prime is 100044431. The reversal of 100044405 is 504440001.

It is not a de Polignac number, because 100044405 - 2⁴ = 100044389 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 11094 + ... + 17976.

It is an arithmetic number, because the mean of its divisors is an integer number (4027140).

Almost surely, 2^100044405 is an apocalyptic number.

100044405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100044405 is a deficient number, since it is larger than the sum of its proper divisors (93258315).

100044405 is a wasteful number, since it uses less digits than its factorization.

100044405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6930 (or 6927 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 100044405 is about 10002.2200035792. The cubic root of 100044405 is about 464.2275764453.

Adding to 100044405 its reverse (504440001), we get a palindrome (604484406).

The spelling of 100044405 in words is "one hundred million, forty-four thousand, four hundred five".