44281649 has 4 divisors (see below), whose sum is σ = 44673636. Its totient is φ = 43889664.

The previous prime is 44281613. The next prime is 44281667. The reversal of 44281649 is 94618244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9412624 + 34869025 = 3068^2 + 5905^2 .

It is a cyclic number.

It is not a de Polignac number, because 44281649 - 2¹⁶ = 44216113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44289649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195824 + ... + 196049.

It is an arithmetic number, because the mean of its divisors is an integer number (11168409).

Almost surely, 2^44281649 is an apocalyptic number.

It is an amenable number.

44281649 is a deficient number, since it is larger than the sum of its proper divisors (391987).

44281649 is a wasteful number, since it uses less digits than its factorization.

44281649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391986.

The product of its digits is 55296, while the sum is 38.

The square root of 44281649 is about 6654.4458071277. The cubic root of 44281649 is about 353.7865039931.

The spelling of 44281649 in words is "forty-four million, two hundred eighty-one thousand, six hundred forty-nine".