49771947 has 4 divisors (see below), whose sum is σ = 66362600. Its totient is φ = 33181296.

The previous prime is 49771921. The next prime is 49771949. The reversal of 49771947 is 74917794.

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

It is not a de Polignac number, because 49771947 - 2⁷ = 49771819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49771896 and 49771905.

It is not an unprimeable number, because it can be changed into a prime (49771949) 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, 8295322 + ... + 8295327.

It is an arithmetic number, because the mean of its divisors is an integer number (16590650).

Almost surely, 2^49771947 is an apocalyptic number.

49771947 is a deficient number, since it is larger than the sum of its proper divisors (16590653).

49771947 is a wasteful number, since it uses less digits than its factorization.

49771947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16590652.

The product of its digits is 444528, while the sum is 48.

The square root of 49771947 is about 7054.9235998698. The cubic root of 49771947 is about 367.8421931884.

The spelling of 49771947 in words is "forty-nine million, seven hundred seventy-one thousand, nine hundred forty-seven".