505442405 has 16 divisors (see below), whose sum is σ = 653837184. Its totient is φ = 372878400.

The previous prime is 505442387. The next prime is 505442417. The reversal of 505442405 is 504244505.

It is not a de Polignac number, because 505442405 - 2¹⁴ = 505426021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73880 + ... + 80430.

It is an arithmetic number, because the mean of its divisors is an integer number (40864824).

Almost surely, 2^505442405 is an apocalyptic number.

It is an amenable number.

505442405 is a deficient number, since it is larger than the sum of its proper divisors (148394779).

505442405 is a wasteful number, since it uses less digits than its factorization.

505442405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7756.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 505442405 is about 22482.0462814220. The cubic root of 505442405 is about 796.5698999741.

The spelling of 505442405 in words is "five hundred five million, four hundred forty-two thousand, four hundred five".