44428191 has 16 divisors (see below), whose sum is σ = 63754848. Its totient is φ = 27417600.

The previous prime is 44428187. The next prime is 44428193. The reversal of 44428191 is 19182444.

It is not a de Polignac number, because 44428191 - 2² = 44428187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44428193) 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 15 ways as a sum of consecutive naturals, for example, 4030 + ... + 10251.

It is an arithmetic number, because the mean of its divisors is an integer number (3984678).

Almost surely, 2^44428191 is an apocalyptic number.

44428191 is a deficient number, since it is larger than the sum of its proper divisors (19326657).

44428191 is a wasteful number, since it uses less digits than its factorization.

44428191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14362.

The product of its digits is 9216, while the sum is 33.

The square root of 44428191 is about 6665.4475468644. The cubic root of 44428191 is about 354.1763381411.

The spelling of 44428191 in words is "forty-four million, four hundred twenty-eight thousand, one hundred ninety-one".