44401644 has 54 divisors (see below), whose sum is σ = 130567164. Its totient is φ = 12685680.

The previous prime is 44401601. The next prime is 44401681. The reversal of 44401644 is 44610444.

44401644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 17 ways as a sum of consecutive naturals, for example, 10822 + ... + 14349.

Almost surely, 2^44401644 is an apocalyptic number.

It is an amenable number.

44401644 is an abundant number, since it is smaller than the sum of its proper divisors (86165520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44401644 is a wasteful number, since it uses less digits than its factorization.

44401644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25195 (or 25183 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 44401644 is about 6663.4558601374. The cubic root of 44401644 is about 354.1057808938.

It can be divided in two parts, 4440 and 1644, that added together give a square (6084 = 78²).

The spelling of 44401644 in words is "forty-four million, four hundred one thousand, six hundred forty-four".