49673891 has 4 divisors (see below), whose sum is σ = 50065152. Its totient is φ = 49282632.

The previous prime is 49673887. The next prime is 49673893. The reversal of 49673891 is 19837694.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49673891 - 2² = 49673887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49673893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195440 + ... + 195693.

It is an arithmetic number, because the mean of its divisors is an integer number (12516288).

Almost surely, 2^49673891 is an apocalyptic number.

49673891 is a deficient number, since it is larger than the sum of its proper divisors (391261).

49673891 is a wasteful number, since it uses less digits than its factorization.

49673891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391260.

The product of its digits is 326592, while the sum is 47.

The square root of 49673891 is about 7047.9707008472. The cubic root of 49673891 is about 367.6004717040.

The spelling of 49673891 in words is "forty-nine million, six hundred seventy-three thousand, eight hundred ninety-one".