41391 has 20 divisors (see below), whose sum is σ = 71632. Its totient is φ = 23328.

The previous prime is 41389. The next prime is 41399. The reversal of 41391 is 19314.

It is not a de Polignac number, because 41391 - 2¹ = 41389 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 13 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41399) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 531 + ... + 603.

2⁴¹³⁹¹ is an apocalyptic number.

41391 is a deficient number, since it is larger than the sum of its proper divisors (30241).

41391 is an equidigital number, since it uses as much as digits as its factorization.

41391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 83 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 41391 is about 203.4477819982. The cubic root of 41391 is about 34.5914398506.

The spelling of 41391 in words is "forty-one thousand, three hundred ninety-one".