505596399 has 16 divisors (see below), whose sum is σ = 840472320. Its totient is φ = 262647360.

The previous prime is 505596383. The next prime is 505596431. The reversal of 505596399 is 993695505.

It is not a de Polignac number, because 505596399 - 2⁴ = 505596383 is a prime.

It is a super-3 number, since 3×505596399³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505596319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1094134 + ... + 1094595.

It is an arithmetic number, because the mean of its divisors is an integer number (52529520).

Almost surely, 2^505596399 is an apocalyptic number.

505596399 is a deficient number, since it is larger than the sum of its proper divisors (334875921).

505596399 is a wasteful number, since it uses less digits than its factorization.

505596399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188750.

The product of its (nonzero) digits is 1640250, while the sum is 51.

The square root of 505596399 is about 22485.4708423017. The cubic root of 505596399 is about 796.6507891967.

The spelling of 505596399 in words is "five hundred five million, five hundred ninety-six thousand, three hundred ninety-nine".