44091644 has 24 divisors (see below), whose sum is σ = 81889920. Its totient is φ = 20727344.

The previous prime is 44091643. The next prime is 44091653. The reversal of 44091644 is 44619044.

It is a self number, because there is not a number n which added to its sum of digits gives 44091644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44091643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367 + ... + 9489.

It is an arithmetic number, because the mean of its divisors is an integer number (3412080).

Almost surely, 2^44091644 is an apocalyptic number.

It is an amenable number.

44091644 is a deficient number, since it is larger than the sum of its proper divisors (37798276).

44091644 is a wasteful number, since it uses less digits than its factorization.

44091644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8209 (or 8207 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 44091644 is about 6640.1539138788. The cubic root of 44091644 is about 353.2797660180.

The spelling of 44091644 in words is "forty-four million, ninety-one thousand, six hundred forty-four".