41091391 has 8 divisors (see below), whose sum is σ = 45368064. Its totient is φ = 36904920.

The previous prime is 41091371. The next prime is 41091403. The reversal of 41091391 is 19319014.

It is a happy number.

41091391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 41091391 - 2⁷ = 41091263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41091371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21591 + ... + 23416.

It is an arithmetic number, because the mean of its divisors is an integer number (5671008).

Almost surely, 2^41091391 is an apocalyptic number.

41091391 is a deficient number, since it is larger than the sum of its proper divisors (4276673).

41091391 is a wasteful number, since it uses less digits than its factorization.

41091391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45101.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 41091391 is about 6410.2567031282. The cubic root of 41091391 is about 345.0777420547.

The spelling of 41091391 in words is "forty-one million, ninety-one thousand, three hundred ninety-one".