50389440 has 56 divisors (see below), whose sum is σ = 159989520. Its totient is φ = 13436928.

The previous prime is 50389433. The next prime is 50389441. The reversal of 50389440 is 4498305.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50389441) 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, 25285 + ... + 27204.

Almost surely, 2^50389440 is an apocalyptic number.

It is an amenable number.

50389440 is an abundant number, since it is smaller than the sum of its proper divisors (109600080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50389440 is a wasteful number, since it uses less digits than its factorization.

50389440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52509 (or 52499 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 50389440 is about 7098.5519650137. The cubic root of 50389440 is about 369.3571501133.

The spelling of 50389440 in words is "fifty million, three hundred eighty-nine thousand, four hundred forty".