49881994 has 24 divisors (see below), whose sum is σ = 78961644. Its totient is φ = 23616000.

The previous prime is 49881991. The next prime is 49882013. The reversal of 49881994 is 49918894.

It is a happy number.

49881994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 25250625 + 24631369 = 5025^2 + 4963^2 .

It is not an unprimeable number, because it can be changed into a prime (49881991) 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 11 ways as a sum of consecutive naturals, for example, 124194 + ... + 124594.

Almost surely, 2^49881994 is an apocalyptic number.

49881994 is a deficient number, since it is larger than the sum of its proper divisors (29079650).

49881994 is a wasteful number, since it uses less digits than its factorization.

49881994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522 (or 481 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 49881994 is about 7062.7185983869. The cubic root of 49881994 is about 368.1130963432.

The spelling of 49881994 in words is "forty-nine million, eight hundred eighty-one thousand, nine hundred ninety-four".