505449 has 24 divisors (see below), whose sum is σ = 853632. Its totient is φ = 282240.

The previous prime is 505447. The next prime is 505459. The reversal of 505449 is 944505.

It is not a de Polignac number, because 505449 - 2¹ = 505447 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4417 + ... + 4529.

It is an arithmetic number, because the mean of its divisors is an integer number (35568).

2⁵⁰⁵⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

505449 is a deficient number, since it is larger than the sum of its proper divisors (348183).

505449 is a wasteful number, since it uses less digits than its factorization.

505449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 505449 is about 710.9493652856. The cubic root of 505449 is about 79.6573364500.

The spelling of 505449 in words is "five hundred five thousand, four hundred forty-nine".