44891 has 12 divisors (see below), whose sum is σ = 57456. Its totient is φ = 34320.

The previous prime is 44887. The next prime is 44893. The reversal of 44891 is 19844.

It is not a de Polignac number, because 44891 - 2² = 44887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44891.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 44891.

It is not an unprimeable number, because it can be changed into a prime (44893) 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 11 ways as a sum of consecutive naturals, for example, 821 + ... + 873.

It is an arithmetic number, because the mean of its divisors is an integer number (4788).

2⁴⁴⁸⁹¹ is an apocalyptic number.

44891 is a deficient number, since it is larger than the sum of its proper divisors (12565).

44891 is a wasteful number, since it uses less digits than its factorization.

With its successor (44892) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (82).

44891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 71 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 44891 is about 211.8749631268. The cubic root of 44891 is about 35.5401912060.

It can be divided in two parts, 44 and 891, that multiplied together give a square (39204 = 198²).

The spelling of 44891 in words is "forty-four thousand, eight hundred ninety-one".