49388840 has 16 divisors (see below), whose sum is σ = 111124980. Its totient is φ = 19755520.

The previous prime is 49388831. The next prime is 49388861. The reversal of 49388840 is 4888394.

49388840 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 2 ways, for example, as 44970436 + 4418404 = 6706^2 + 2102^2 .

It is a junction number, because it is equal to n+sod(n) for n = 49388791 and 49388800.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 617321 + ... + 617400.

Almost surely, 2^49388840 is an apocalyptic number.

49388840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49388840 is an abundant number, since it is smaller than the sum of its proper divisors (61736140).

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

49388840 is a wasteful number, since it uses less digits than its factorization.

49388840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234732 (or 1234728 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 49388840 is about 7027.7194024804. The cubic root of 49388840 is about 366.8959704354.

The spelling of 49388840 in words is "forty-nine million, three hundred eighty-eight thousand, eight hundred forty".