50389647439 has 16 divisors (see below), whose sum is σ = 51976131840. Its totient is φ = 48828381120.

The previous prime is 50389647437. The next prime is 50389647443. The reversal of 50389647439 is 93474698305.

It is a happy number.

It is not a de Polignac number, because 50389647439 - 2¹ = 50389647437 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 (50389647437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13724574 + ... + 13728244.

It is an arithmetic number, because the mean of its divisors is an integer number (3248508240).

Almost surely, 2^50389647439 is an apocalyptic number.

50389647439 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

50389647439 is a deficient number, since it is larger than the sum of its proper divisors (1586484401).

50389647439 is a wasteful number, since it uses less digits than its factorization.

50389647439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990.

The product of its (nonzero) digits is 19595520, while the sum is 58.

The spelling of 50389647439 in words is "fifty billion, three hundred eighty-nine million, six hundred forty-seven thousand, four hundred thirty-nine".