50478989 has 16 divisors (see below), whose sum is σ = 57364800. Its totient is φ = 44012160.

The previous prime is 50478979. The next prime is 50479003. The reversal of 50478989 is 98987405.

50478989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 50478989 - 2⁴ = 50478973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50478959) 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 15 ways as a sum of consecutive naturals, for example, 28862 + ... + 30560.

It is an arithmetic number, because the mean of its divisors is an integer number (3585300).

Almost surely, 2^50478989 is an apocalyptic number.

It is an amenable number.

50478989 is a deficient number, since it is larger than the sum of its proper divisors (6885811).

50478989 is a wasteful number, since it uses less digits than its factorization.

50478989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 50478989 is about 7104.8567191746. The cubic root of 50478989 is about 369.5758201989.

The spelling of 50478989 in words is "fifty million, four hundred seventy-eight thousand, nine hundred eighty-nine".