48781639 has 8 divisors (see below), whose sum is σ = 49777568. Its totient is φ = 47792160.

The previous prime is 48781553. The next prime is 48781661. The reversal of 48781639 is 93618784.

It is a happy number.

48781639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 48781639 - 2⁷ = 48781511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48781669) 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, 15454 + ... + 18340.

It is an arithmetic number, because the mean of its divisors is an integer number (6222196).

Almost surely, 2^48781639 is an apocalyptic number.

48781639 is a deficient number, since it is larger than the sum of its proper divisors (995929).

48781639 is a wasteful number, since it uses less digits than its factorization.

48781639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225.

The product of its digits is 290304, while the sum is 46.

The square root of 48781639 is about 6984.3853702384. The cubic root of 48781639 is about 365.3861903567.

The spelling of 48781639 in words is "forty-eight million, seven hundred eighty-one thousand, six hundred thirty-nine".