44040191 has 16 divisors (see below), whose sum is σ = 49533120. Its totient is φ = 38887680.

The previous prime is 44040187. The next prime is 44040253. The reversal of 44040191 is 19104044.

It is not a de Polignac number, because 44040191 - 2² = 44040187 is a prime.

It is a plaindrome in base 8 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44040121) by changing a digit.

Being equal to 21×2²¹-1, it is a Woodall number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27470 + ... + 29028.

It is an arithmetic number, because the mean of its divisors is an integer number (3095820).

Almost surely, 2^44040191 is an apocalyptic number.

44040191 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

44040191 is a deficient number, since it is larger than the sum of its proper divisors (5492929).

44040191 is a wasteful number, since it uses less digits than its factorization.

44040191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 44040191 is about 6636.2783998262. The cubic root of 44040191 is about 353.1422919039.

The spelling of 44040191 in words is "forty-four million, forty thousand, one hundred ninety-one".