501389889 has 64 divisors (see below), whose sum is σ = 906866688. Its totient is φ = 237945600.

The previous prime is 501389881. The next prime is 501389899. The reversal of 501389889 is 988983105.

It is not a de Polignac number, because 501389889 - 2³ = 501389881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (501389881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 308499 + ... + 310119.

It is an arithmetic number, because the mean of its divisors is an integer number (14169792).

Almost surely, 2^501389889 is an apocalyptic number.

It is an amenable number.

501389889 is a deficient number, since it is larger than the sum of its proper divisors (405476799).

501389889 is a wasteful number, since it uses less digits than its factorization.

501389889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758.

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 501389889 is about 22391.7370697318. The cubic root of 501389889 is about 794.4352826708.

The spelling of 501389889 in words is "five hundred one million, three hundred eighty-nine thousand, eight hundred eighty-nine".