100905944 has 8 divisors (see below), whose sum is σ = 189198660. Its totient is φ = 50452968.

The previous prime is 100905923. The next prime is 100905967. The reversal of 100905944 is 449509001.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×100905944² = 20364019069062272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100905944.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6306614 + ... + 6306629.

Almost surely, 2^100905944 is an apocalyptic number.

It is an amenable number.

100905944 is a deficient number, since it is larger than the sum of its proper divisors (88292716).

100905944 is a wasteful number, since it uses less digits than its factorization.

100905944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12613249 (or 12613245 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 100905944 is about 10045.1950702811. The cubic root of 100905944 is about 465.5563449306.

The spelling of 100905944 in words is "one hundred million, nine hundred five thousand, nine hundred forty-four".