49749 has 16 divisors (see below), whose sum is σ = 79872. Its totient is φ = 26928.

The previous prime is 49747. The next prime is 49757. The reversal of 49749 is 94794.

It is not a de Polignac number, because 49749 - 2¹ = 49747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49741) 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 15 ways as a sum of consecutive naturals, for example, 432 + ... + 534.

It is an arithmetic number, because the mean of its divisors is an integer number (4992).

2⁴⁹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

49749 is a deficient number, since it is larger than the sum of its proper divisors (30123).

49749 is a wasteful number, since it uses less digits than its factorization.

49749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136.

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

The square root of 49749 is about 223.0448385415. The cubic root of 49749 is about 36.7785654162.

The spelling of 49749 in words is "forty-nine thousand, seven hundred forty-nine".