49947 has 4 divisors (see below), whose sum is σ = 66600. Its totient is φ = 33296.

The previous prime is 49943. The next prime is 49957. The reversal of 49947 is 74994.

49947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 49947 - 2² = 49943 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (49943) 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, 8322 + ... + 8327.

It is an arithmetic number, because the mean of its divisors is an integer number (16650).

2⁴⁹⁹⁴⁷ is an apocalyptic number.

49947 is a deficient number, since it is larger than the sum of its proper divisors (16653).

49947 is a wasteful number, since it uses less digits than its factorization.

49947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16652.

The product of its digits is 9072, while the sum is 33.

The square root of 49947 is about 223.4882547249. The cubic root of 49947 is about 36.8272934731.

The spelling of 49947 in words is "forty-nine thousand, nine hundred forty-seven".