108992644 has 12 divisors (see below), whose sum is σ = 201957084. Its totient is φ = 51290624.

The previous prime is 108992617. The next prime is 108992687. The reversal of 108992644 is 446299801.

It can be written as a sum of positive squares in 2 ways, for example, as 56430144 + 52562500 = 7512^2 + 7250^2 .

It is a super-2 number, since 2×108992644² = 23758792892221472, 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 108992644.

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 in 3 ways as a sum of consecutive naturals, for example, 801349 + ... + 801484.

It is an arithmetic number, because the mean of its divisors is an integer number (16829757).

Almost surely, 2^108992644 is an apocalyptic number.

It is an amenable number.

108992644 is a deficient number, since it is larger than the sum of its proper divisors (92964440).

108992644 is a wasteful number, since it uses less digits than its factorization.

108992644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602854 (or 1602852 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 108992644 is about 10439.9542144590. The cubic root of 108992644 is about 477.6748721266.

The spelling of 108992644 in words is "one hundred eight million, nine hundred ninety-two thousand, six hundred forty-four".