49859 has 4 divisors (see below), whose sum is σ = 50616. Its totient is φ = 49104.

The previous prime is 49853. The next prime is 49871. The reversal of 49859 is 95894.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95894 = 2 ⋅47947.

It is a cyclic number.

It is not a de Polignac number, because 49859 - 2⁴ = 49843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269 + ... + 414.

It is an arithmetic number, because the mean of its divisors is an integer number (12654).

2⁴⁹⁸⁵⁹ is an apocalyptic number.

49859 is a deficient number, since it is larger than the sum of its proper divisors (757).

49859 is an equidigital number, since it uses as much as digits as its factorization.

49859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its digits is 12960, while the sum is 35.

The square root of 49859 is about 223.2912895749. The cubic root of 49859 is about 36.8056524871.

Adding to 49859 its sum of digits (35), we get a palindrome (49894).

It can be divided in two parts, 4985 and 9, that added together give a palindrome (4994).

The spelling of 49859 in words is "forty-nine thousand, eight hundred fifty-nine".