49966 has 16 divisors (see below), whose sum is σ = 88704. Its totient is φ = 20664.

The previous prime is 49957. The next prime is 49991. The reversal of 49966 is 66994.

49966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561 + ... + 643.

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

2⁴⁹⁹⁶⁶ is an apocalyptic number.

49966 is a deficient number, since it is larger than the sum of its proper divisors (38738).

49966 is a wasteful number, since it uses less digits than its factorization.

49966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135.

The product of its digits is 11664, while the sum is 34.

The square root of 49966 is about 223.5307585099. The cubic root of 49966 is about 36.8319626215.

It can be divided in two parts, 499 and 66, that added together give a palindrome (565).

The spelling of 49966 in words is "forty-nine thousand, nine hundred sixty-six".