44221857 has 16 divisors (see below), whose sum is σ = 60204480. Its totient is φ = 28864512.

The previous prime is 44221843. The next prime is 44221907. The reversal of 44221857 is 75812244.

It is not a de Polignac number, because 44221857 - 2⁷ = 44221729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44221357) 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 15 ways as a sum of consecutive naturals, for example, 76353 + ... + 76929.

It is an arithmetic number, because the mean of its divisors is an integer number (3762780).

Almost surely, 2^44221857 is an apocalyptic number.

It is an amenable number.

44221857 is a deficient number, since it is larger than the sum of its proper divisors (15982623).

44221857 is a wasteful number, since it uses less digits than its factorization.

44221857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072.

The product of its digits is 17920, while the sum is 33.

The square root of 44221857 is about 6649.9516539596. The cubic root of 44221857 is about 353.6271969869.

The spelling of 44221857 in words is "forty-four million, two hundred twenty-one thousand, eight hundred fifty-seven".