505044988 has 24 divisors (see below), whose sum is σ = 1011032064. Its totient is φ = 216246000.

The previous prime is 505044973. The next prime is 505044989. The reversal of 505044988 is 889440505.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505044989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24393 + ... + 40063.

It is an arithmetic number, because the mean of its divisors is an integer number (42126336).

Almost surely, 2^505044988 is an apocalyptic number.

It is an amenable number.

505044988 is an abundant number, since it is smaller than the sum of its proper divisors (505987076).

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

505044988 is a wasteful number, since it uses less digits than its factorization.

505044988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16833 (or 16831 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 505044988 is about 22473.2060018147. The cubic root of 505044988 is about 796.3610707560.

The spelling of 505044988 in words is "five hundred five million, forty-four thousand, nine hundred eighty-eight".