49447881 has 32 divisors (see below), whose sum is σ = 85113600. Its totient is φ = 27786240.

The previous prime is 49447877. The next prime is 49447897. The reversal of 49447881 is 18874494.

49447881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49447881 - 2² = 49447877 is a prime.

It is a super-2 number, since 2×49447881² = 4890185870780322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49447081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9385 + ... + 13673.

It is an arithmetic number, because the mean of its divisors is an integer number (2659800).

Almost surely, 2^49447881 is an apocalyptic number.

It is an amenable number.

49447881 is a deficient number, since it is larger than the sum of its proper divisors (35665719).

49447881 is a wasteful number, since it uses less digits than its factorization.

49447881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366 (or 4360 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 49447881 is about 7031.9187281993. The cubic root of 49447881 is about 367.0421119453.

The spelling of 49447881 in words is "forty-nine million, four hundred forty-seven thousand, eight hundred eighty-one".