44091 has 16 divisors (see below), whose sum is σ = 69120. Its totient is φ = 27720.

The previous prime is 44089. The next prime is 44101. The reversal of 44091 is 19044.

44091 = 3³ + 4³ + ... + 20³.

It is not a de Polignac number, because 44091 - 2¹ = 44089 is a prime.

It is an Ulam number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586 + ... + 656.

It is an arithmetic number, because the mean of its divisors is an integer number (4320).

2⁴⁴⁰⁹¹ is an apocalyptic number.

44091 is a deficient number, since it is larger than the sum of its proper divisors (25029).

44091 is a wasteful number, since it uses less digits than its factorization.

44091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 44091 is about 209.9785703352. The cubic root of 44091 is about 35.3278046015.

It can be divided in two parts, 4 and 4091, that added together give a triangular number (4095 = T₉₀).

The spelling of 44091 in words is "forty-four thousand, ninety-one".