49881609 has 32 divisors (see below), whose sum is σ = 76003200. Its totient is φ = 32322240.

The previous prime is 49881599. The next prime is 49881647. The reversal of 49881609 is 90618894.

It is not a de Polignac number, because 49881609 - 2¹⁶ = 49816073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49881659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275499 + ... + 275679.

It is an arithmetic number, because the mean of its divisors is an integer number (2375100).

Almost surely, 2^49881609 is an apocalyptic number.

It is an amenable number.

49881609 is a deficient number, since it is larger than the sum of its proper divisors (26121591).

49881609 is a wasteful number, since it uses less digits than its factorization.

49881609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 49881609 is about 7062.6913425407. The cubic root of 49881609 is about 368.1121492819.

The spelling of 49881609 in words is "forty-nine million, eight hundred eighty-one thousand, six hundred nine".