505399332 has 48 divisors (see below), whose sum is σ = 1233671040. Its totient is φ = 160731648.

The previous prime is 505399331. The next prime is 505399343. The reversal of 505399332 is 233993505.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (505399331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117394 + ... + 121622.

It is an arithmetic number, because the mean of its divisors is an integer number (25701480).

Almost surely, 2^505399332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505399332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (616835520).

505399332 is an abundant number, since it is smaller than the sum of its proper divisors (728271708).

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

505399332 is a wasteful number, since it uses less digits than its factorization.

505399332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4692 (or 4690 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 39.

The square root of 505399332 is about 22481.0883188515. The cubic root of 505399332 is about 796.5472718569.

The spelling of 505399332 in words is "five hundred five million, three hundred ninety-nine thousand, three hundred thirty-two".