100443994 has 48 divisors (see below), whose sum is σ = 188136000. Its totient is φ = 39287808.

The previous prime is 100443989. The next prime is 100444031. The reversal of 100443994 is 499344001.

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 23 ways as a sum of consecutive naturals, for example, 223482 + ... + 223930.

It is an arithmetic number, because the mean of its divisors is an integer number (3919500).

Almost surely, 2^100443994 is an apocalyptic number.

100443994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

100443994 is a deficient number, since it is larger than the sum of its proper divisors (87692006).

100443994 is a wasteful number, since it uses less digits than its factorization.

100443994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 100443994 is about 10022.1751132177. The cubic root of 100443994 is about 464.8448150597.

Adding to 100443994 its reverse (499344001), we get a palindrome (599787995).

The spelling of 100443994 in words is "one hundred million, four hundred forty-three thousand, nine hundred ninety-four".