49949 has 4 divisors (see below), whose sum is σ = 50400. Its totient is φ = 49500.

The previous prime is 49943. The next prime is 49957. The reversal of 49949 is 94994.

49949 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, 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: 94994 = 2 ⋅47497.

It is a cyclic number.

It is not a de Polignac number, because 49949 - 2¹² = 45853 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent 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, 74 + ... + 324.

It is an arithmetic number, because the mean of its divisors is an integer number (12600).

2⁴⁹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

49949 is a deficient number, since it is larger than the sum of its proper divisors (451).

49949 is a wasteful number, since it uses less digits than its factorization.

49949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450.

The product of its digits is 11664, while the sum is 35.

The square root of 49949 is about 223.4927291882. The cubic root of 49949 is about 36.8277850182.

The spelling of 49949 in words is "forty-nine thousand, nine hundred forty-nine".