505493944 has 16 divisors (see below), whose sum is σ = 948657600. Its totient is φ = 252518592.

The previous prime is 505493941. The next prime is 505493953. The reversal of 505493944 is 449394505.

It is a self number, because there is not a number n which added to its sum of digits gives 505493944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505493941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18952 + ... + 37015.

It is an arithmetic number, because the mean of its divisors is an integer number (59291100).

Almost surely, 2^505493944 is an apocalyptic number.

It is an amenable number.

505493944 is a deficient number, since it is larger than the sum of its proper divisors (443163656).

505493944 is a wasteful number, since it uses less digits than its factorization.

505493944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57102 (or 57098 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 505493944 is about 22483.1924779378. The cubic root of 505493944 is about 796.5969739594.

The spelling of 505493944 in words is "five hundred five million, four hundred ninety-three thousand, nine hundred forty-four".