505623239 has 4 divisors (see below), whose sum is σ = 551589000. Its totient is φ = 459657480.

The previous prime is 505623221. The next prime is 505623247. The reversal of 505623239 is 932326505.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505623239 - 2²⁰ = 504574663 is a prime.

It is a super-2 number, since 2×505623239² = 511309719633702242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505623199 and 505623208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505623259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22982864 + ... + 22982885.

It is an arithmetic number, because the mean of its divisors is an integer number (137897250).

Almost surely, 2^505623239 is an apocalyptic number.

505623239 is a deficient number, since it is larger than the sum of its proper divisors (45965761).

505623239 is a wasteful number, since it uses less digits than its factorization.

505623239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45965760.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 505623239 is about 22486.0676642227. The cubic root of 505623239 is about 796.6648859010.

The spelling of 505623239 in words is "five hundred five million, six hundred twenty-three thousand, two hundred thirty-nine".