49691 has 8 divisors (see below), whose sum is σ = 54720. Its totient is φ = 44928.

The previous prime is 49681. The next prime is 49697. The reversal of 49691 is 19694.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49691 - 2⁶ = 49627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49697) 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 7 ways as a sum of consecutive naturals, for example, 590 + ... + 668.

It is an arithmetic number, because the mean of its divisors is an integer number (6840).

2⁴⁹⁶⁹¹ is an apocalyptic number.

49691 is a deficient number, since it is larger than the sum of its proper divisors (5029).

49691 is a wasteful number, since it uses less digits than its factorization.

49691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133.

The product of its digits is 1944, while the sum is 29.

The square root of 49691 is about 222.9147819235. The cubic root of 49691 is about 36.7642670630.

The spelling of 49691 in words is "forty-nine thousand, six hundred ninety-one".