44994581 has 4 divisors (see below), whose sum is σ = 45029964. Its totient is φ = 44959200.

The previous prime is 44994569. The next prime is 44994611. The reversal of 44994581 is 18549944.

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 16532356 + 28462225 = 4066^2 + 5335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44994581 is a prime.

It is a super-2 number, since 2×44994581² = 4049024638731122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44990581) 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 3 ways as a sum of consecutive naturals, for example, 15710 + ... + 18351.

It is an arithmetic number, because the mean of its divisors is an integer number (11257491).

Almost surely, 2^44994581 is an apocalyptic number.

It is an amenable number.

44994581 is a deficient number, since it is larger than the sum of its proper divisors (35383).

44994581 is a wasteful number, since it uses less digits than its factorization.

44994581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35382.

The product of its digits is 207360, while the sum is 44.

The square root of 44994581 is about 6707.8000119264. The cubic root of 44994581 is about 355.6750522427.

The spelling of 44994581 in words is "forty-four million, nine hundred ninety-four thousand, five hundred eighty-one".