50138789 has 2 divisors, whose sum is σ = 50138790. Its totient is φ = 50138788.

The previous prime is 50138717. The next prime is 50138791. The reversal of 50138789 is 98783105.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47472100 + 2666689 = 6890^2 + 1633^2 .

It is a cyclic number.

It is not a de Polignac number, because 50138789 - 2⁸ = 50138533 is a prime.

Together with 50138791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50138189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25069394 + 25069395.

It is an arithmetic number, because the mean of its divisors is an integer number (25069395).

Almost surely, 2^50138789 is an apocalyptic number.

It is an amenable number.

50138789 is a deficient number, since it is larger than the sum of its proper divisors (1).

50138789 is an equidigital number, since it uses as much as digits as its factorization.

50138789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 50138789 is about 7080.8748753244. The cubic root of 50138789 is about 368.7437036558.

Subtracting 50138789 from its reverse (98783105), we obtain a triangular number (48644316 = T₉₈₆₃).

The spelling of 50138789 in words is "fifty million, one hundred thirty-eight thousand, seven hundred eighty-nine".