44081649 has 12 divisors (see below), whose sum is σ = 63737856. Its totient is φ = 29358072.

The previous prime is 44081627. The next prime is 44081651. The reversal of 44081649 is 94618044.

It is a happy number.

44081649 is a `hidden beast` number, since 4 + 4 + 0 + 8 + 1 + 649 = 666.

It is not a de Polignac number, because 44081649 - 2⁹ = 44081137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44081449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10512 + ... + 14094.

It is an arithmetic number, because the mean of its divisors is an integer number (5311488).

Almost surely, 2^44081649 is an apocalyptic number.

It is an amenable number.

44081649 is a deficient number, since it is larger than the sum of its proper divisors (19656207).

44081649 is a wasteful number, since it uses less digits than its factorization.

44081649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4956 (or 4953 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 44081649 is about 6639.4012531252. The cubic root of 44081649 is about 353.2530693639.

The spelling of 44081649 in words is "forty-four million, eighty-one thousand, six hundred forty-nine".