50123989 has 2 divisors, whose sum is σ = 50123990. Its totient is φ = 50123988.

The previous prime is 50123971. The next prime is 50124013. The reversal of 50123989 is 98932105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49914225 + 209764 = 7065^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 50123989 - 2⁹ = 50123477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50123929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25061994 + 25061995.

It is an arithmetic number, because the mean of its divisors is an integer number (25061995).

Almost surely, 2^50123989 is an apocalyptic number.

It is an amenable number.

50123989 is a deficient number, since it is larger than the sum of its proper divisors (1).

50123989 is an equidigital number, since it uses as much as digits as its factorization.

50123989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 50123989 is about 7079.8297295910. The cubic root of 50123989 is about 368.7074180840.

The spelling of 50123989 in words is "fifty million, one hundred twenty-three thousand, nine hundred eighty-nine".