505896999 has 16 divisors (see below), whose sum is σ = 714666240. Its totient is φ = 317221760.

The previous prime is 505896971. The next prime is 505897009. The reversal of 505896999 is 999698505.

It is a cyclic number.

It is not a de Polignac number, because 505896999 - 2⁷ = 505896871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505896929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136432 + ... + 140090.

It is an arithmetic number, because the mean of its divisors is an integer number (44666640).

Almost surely, 2^505896999 is an apocalyptic number.

505896999 is a deficient number, since it is larger than the sum of its proper divisors (208769241).

505896999 is a wasteful number, since it uses less digits than its factorization.

505896999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6390.

The product of its (nonzero) digits is 7873200, while the sum is 60.

The square root of 505896999 is about 22492.1541653973. The cubic root of 505896999 is about 796.8086395981.

The spelling of 505896999 in words is "five hundred five million, eight hundred ninety-six thousand, nine hundred ninety-nine".