40549 has 8 divisors (see below), whose sum is σ = 44352. Its totient is φ = 36960.

The previous prime is 40543. The next prime is 40559. The reversal of 40549 is 94504.

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 40549 - 2⁹ = 40037 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 (40543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922 + ... + 964.

It is an arithmetic number, because the mean of its divisors is an integer number (5544).

2⁴⁰⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

40549 is a deficient number, since it is larger than the sum of its proper divisors (3803).

40549 is a wasteful number, since it uses less digits than its factorization.

40549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 40549 is about 201.3678226530. The cubic root of 40549 is about 34.3552713240.

It can be divided in two parts, 405 and 49, that added together give a palindrome (454).

The spelling of 40549 in words is "forty thousand, five hundred forty-nine".