105989944 has 8 divisors (see below), whose sum is σ = 198731160. Its totient is φ = 52994968.

The previous prime is 105989909. The next prime is 105989953. The reversal of 105989944 is 449989501.

It is a happy number.

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

It is a super-2 number, since 2×105989944² = 22467736458246272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6624364 + ... + 6624379.

It is an arithmetic number, because the mean of its divisors is an integer number (24841395).

Almost surely, 2^105989944 is an apocalyptic number.

It is an amenable number.

105989944 is a deficient number, since it is larger than the sum of its proper divisors (92741216).

105989944 is a wasteful number, since it uses less digits than its factorization.

105989944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13248749 (or 13248745 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 105989944 is about 10295.1417668724. The cubic root of 105989944 is about 473.2473828374.

The spelling of 105989944 in words is "one hundred five million, nine hundred eighty-nine thousand, nine hundred forty-four".