50309389 has 8 divisors (see below), whose sum is σ = 54454400. Its totient is φ = 46203696.

The previous prime is 50309383. The next prime is 50309401. The reversal of 50309389 is 98390305.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50309389 - 2¹³ = 50301197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50309383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7137 + ... + 12310.

It is an arithmetic number, because the mean of its divisors is an integer number (6806800).

Almost surely, 2^50309389 is an apocalyptic number.

It is an amenable number.

50309389 is a deficient number, since it is larger than the sum of its proper divisors (4145011).

50309389 is a wasteful number, since it uses less digits than its factorization.

50309389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19659.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 50309389 is about 7092.9111794805. The cubic root of 50309389 is about 369.1614538163.

The spelling of 50309389 in words is "fifty million, three hundred nine thousand, three hundred eighty-nine".