50003978989 has 4 divisors (see below), whose sum is σ = 52178065056. Its totient is φ = 47829892924.

The previous prime is 50003978971. The next prime is 50003979079. The reversal of 50003978989 is 98987930005.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50003978989 - 2⁷ = 50003978861 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 (50003978489) 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 3 ways as a sum of consecutive naturals, for example, 1087042999 + ... + 1087043044.

It is an arithmetic number, because the mean of its divisors is an integer number (13044516264).

Almost surely, 2^50003978989 is an apocalyptic number.

It is an amenable number.

50003978989 is a deficient number, since it is larger than the sum of its proper divisors (2174086067).

50003978989 is a wasteful number, since it uses less digits than its factorization.

50003978989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174086066.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 50003978989 in words is "fifty billion, three million, nine hundred seventy-eight thousand, nine hundred eighty-nine".