505438464 has 36 divisors (see below), whose sum is σ = 1345205456. Its totient is φ = 168479232.

The previous prime is 505438457. The next prime is 505438481. The reversal of 505438464 is 464834505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328294 + ... + 329829.

Almost surely, 2^505438464 is an apocalyptic number.

It is an amenable number.

505438464 is an abundant number, since it is smaller than the sum of its proper divisors (839766992).

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

505438464 is an equidigital number, since it uses as much as digits as its factorization.

505438464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658142 (or 658128 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The square root of 505438464 is about 22481.9586335355. The cubic root of 505438464 is about 796.5678296491.

The spelling of 505438464 in words is "five hundred five million, four hundred thirty-eight thousand, four hundred sixty-four".