49991784 has 32 divisors (see below), whose sum is σ = 125737920. Its totient is φ = 16562816.

The previous prime is 49991779. The next prime is 49991789. The reversal of 49991784 is 48719994.

49991784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (49991779) and next prime (49991789).

It is not an unprimeable number, because it can be changed into a prime (49991789) 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 7 ways as a sum of consecutive naturals, for example, 2229 + ... + 10244.

It is an arithmetic number, because the mean of its divisors is an integer number (3929310).

Almost surely, 2^49991784 is an apocalyptic number.

It is an amenable number.

49991784 is an abundant number, since it is smaller than the sum of its proper divisors (75746136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49991784 is a wasteful number, since it uses less digits than its factorization.

49991784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12649 (or 12645 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 49991784 is about 7070.4868290663. The cubic root of 49991784 is about 368.3829700902.

The spelling of 49991784 in words is "forty-nine million, nine hundred ninety-one thousand, seven hundred eighty-four".