404727 has 4 divisors (see below), whose sum is σ = 539640. Its totient is φ = 269816.

The previous prime is 404713. The next prime is 404773. The reversal of 404727 is 727404.

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 404727 - 2¹⁰ = 403703 is a prime.

It is a D-number.

404727 is a lucky number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 404697 and 404706.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 404727.

It is not an unprimeable number, because it can be changed into a prime (404527) 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, 67452 + ... + 67457.

It is an arithmetic number, because the mean of its divisors is an integer number (134910).

2⁴⁰⁴⁷²⁷ is an apocalyptic number.

404727 is a deficient number, since it is larger than the sum of its proper divisors (134913).

404727 is a wasteful number, since it uses less digits than its factorization.

404727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134912.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 404727 is about 636.1815778534. The cubic root of 404727 is about 73.9697343970.

The spelling of 404727 in words is "four hundred four thousand, seven hundred twenty-seven", and thus it is an iban number.