505797999 has 8 divisors (see below), whose sum is σ = 770739840. Its totient is φ = 289027416.

The previous prime is 505797997. The next prime is 505798009. The reversal of 505797999 is 999797505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505797999 - 2¹ = 505797997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505797997) 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, 12042789 + ... + 12042830.

It is an arithmetic number, because the mean of its divisors is an integer number (96342480).

Almost surely, 2^505797999 is an apocalyptic number.

505797999 is a deficient number, since it is larger than the sum of its proper divisors (264941841).

505797999 is a wasteful number, since it uses less digits than its factorization.

505797999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24085629.

The product of its (nonzero) digits is 8037225, while the sum is 60.

The square root of 505797999 is about 22489.9532903028. The cubic root of 505797999 is about 796.7566598462.

The spelling of 505797999 in words is "five hundred five million, seven hundred ninety-seven thousand, nine hundred ninety-nine".