40947 has 4 divisors (see below), whose sum is σ = 54600. Its totient is φ = 27296.

The previous prime is 40939. The next prime is 40949. The reversal of 40947 is 74904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40947 - 2³ = 40939 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (40949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6822 + ... + 6827.

It is an arithmetic number, because the mean of its divisors is an integer number (13650).

2⁴⁰⁹⁴⁷ is an apocalyptic number.

40947 is a deficient number, since it is larger than the sum of its proper divisors (13653).

40947 is a wasteful number, since it uses less digits than its factorization.

40947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 40947 is about 202.3536508195. The cubic root of 40947 is about 34.4673078251.

The spelling of 40947 in words is "forty thousand, nine hundred forty-seven".