500309478 has 48 divisors (see below), whose sum is σ = 1139520096. Its totient is φ = 158336640.

The previous prime is 500309477. The next prime is 500309489. The reversal of 500309478 is 874903005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500309471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52308 + ... + 61128.

It is an arithmetic number, because the mean of its divisors is an integer number (23740002).

Almost surely, 2^500309478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 500309478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569760048).

500309478 is an abundant number, since it is smaller than the sum of its proper divisors (639210618).

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

500309478 is a wasteful number, since it uses less digits than its factorization.

500309478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8989 (or 8986 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 500309478 is about 22367.5988429693. The cubic root of 500309478 is about 793.8642474442.

The spelling of 500309478 in words is "five hundred million, three hundred nine thousand, four hundred seventy-eight".