50378989 has 2 divisors, whose sum is σ = 50378990. Its totient is φ = 50378988.

The previous prime is 50378981. The next prime is 50379031. The reversal of 50378989 is 98987305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50268100 + 110889 = 7090^2 + 333^2 .

It is a cyclic number.

It is not a de Polignac number, because 50378989 - 2³ = 50378981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50378981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25189494 + 25189495.

It is an arithmetic number, because the mean of its divisors is an integer number (25189495).

Almost surely, 2^50378989 is an apocalyptic number.

It is an amenable number.

50378989 is a deficient number, since it is larger than the sum of its proper divisors (1).

50378989 is an equidigital number, since it uses as much as digits as its factorization.

50378989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 50378989 is about 7097.8157907909. The cubic root of 50378989 is about 369.3316128944.

The spelling of 50378989 in words is "fifty million, three hundred seventy-eight thousand, nine hundred eighty-nine".