49969 has 4 divisors (see below), whose sum is σ = 50544. Its totient is φ = 49396.

The previous prime is 49957. The next prime is 49991. The reversal of 49969 is 96994.

49969 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96994 = 2 ⋅48497.

It is a cyclic number.

It is not a de Polignac number, because 49969 - 2⁵ = 49937 is a prime.

It is a super-2 number, since 2×49969² = 4993801922, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (49919) 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, 127 + ... + 340.

It is an arithmetic number, because the mean of its divisors is an integer number (12636).

2⁴⁹⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

49969 is a deficient number, since it is larger than the sum of its proper divisors (575).

49969 is a wasteful number, since it uses less digits than its factorization.

49969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574.

The product of its digits is 17496, while the sum is 37.

The square root of 49969 is about 223.5374688950. The cubic root of 49969 is about 36.8326997473.

It can be divided in two parts, 4996 and 9, that added together give a palindrome (5005).

The spelling of 49969 in words is "forty-nine thousand, nine hundred sixty-nine".