44387649 has 8 divisors (see below), whose sum is σ = 65759520. Its totient is φ = 29591748.

The previous prime is 44387633. The next prime is 44387657. The reversal of 44387649 is 94678344.

It is not a de Polignac number, because 44387649 - 2⁴ = 44387633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44387669) 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 7 ways as a sum of consecutive naturals, for example, 821967 + ... + 822020.

It is an arithmetic number, because the mean of its divisors is an integer number (8219940).

Almost surely, 2^44387649 is an apocalyptic number.

It is an amenable number.

44387649 is a deficient number, since it is larger than the sum of its proper divisors (21371871).

44387649 is a wasteful number, since it uses less digits than its factorization.

44387649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643996 (or 1643990 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 44387649 is about 6662.4056466114. The cubic root of 44387649 is about 354.0685733288.

The spelling of 44387649 in words is "forty-four million, three hundred eighty-seven thousand, six hundred forty-nine".