504815993 has 12 divisors (see below), whose sum is σ = 557355120. Its totient is φ = 456877080.

The previous prime is 504815981. The next prime is 504815999. The reversal of 504815993 is 399518405.

It is a happy number.

It is not a de Polignac number, because 504815993 - 2⁶ = 504815929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (504815999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18278 + ... + 36656.

It is an arithmetic number, because the mean of its divisors is an integer number (46446260).

Almost surely, 2^504815993 is an apocalyptic number.

It is an amenable number.

504815993 is a deficient number, since it is larger than the sum of its proper divisors (52539127).

504815993 is a wasteful number, since it uses less digits than its factorization.

504815993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18628 (or 18617 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 504815993 is about 22468.1105792187. The cubic root of 504815993 is about 796.2406918613.

The spelling of 504815993 in words is "five hundred four million, eight hundred fifteen thousand, nine hundred ninety-three".