44561893 has 4 divisors (see below), whose sum is σ = 46098540. Its totient is φ = 43025248.

The previous prime is 44561873. The next prime is 44561921. The reversal of 44561893 is 39816544.

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 7193124 + 37368769 = 2682^2 + 6113^2 .

It is a cyclic number.

It is not a de Polignac number, because 44561893 - 2⁹ = 44561381 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44561843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768280 + ... + 768337.

It is an arithmetic number, because the mean of its divisors is an integer number (11524635).

Almost surely, 2^44561893 is an apocalyptic number.

It is an amenable number.

44561893 is a deficient number, since it is larger than the sum of its proper divisors (1536647).

44561893 is a wasteful number, since it uses less digits than its factorization.

44561893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536646.

The product of its digits is 103680, while the sum is 40.

The square root of 44561893 is about 6675.4694965972. The cubic root of 44561893 is about 354.5312679021.

It can be divided in two parts, 44561 and 893, that added together give a palindrome (45454).

The spelling of 44561893 in words is "forty-four million, five hundred sixty-one thousand, eight hundred ninety-three".