44218821 has 8 divisors (see below), whose sum is σ = 59480640. Its totient is φ = 29218112.

The previous prime is 44218813. The next prime is 44218841. The reversal of 44218821 is 12881244.

44218821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44218821 - 2³ = 44218813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44218841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64881 + ... + 65558.

It is an arithmetic number, because the mean of its divisors is an integer number (7435080).

Almost surely, 2^44218821 is an apocalyptic number.

It is an amenable number.

44218821 is a deficient number, since it is larger than the sum of its proper divisors (15261819).

44218821 is a wasteful number, since it uses less digits than its factorization.

44218821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130555.

The product of its digits is 4096, while the sum is 30.

The square root of 44218821 is about 6649.7233777053. The cubic root of 44218821 is about 353.6191041808.

The spelling of 44218821 in words is "forty-four million, two hundred eighteen thousand, eight hundred twenty-one".