404534423 has 4 divisors (see below), whose sum is σ = 404674368. Its totient is φ = 404394480.

The previous prime is 404534393. The next prime is 404534443. The reversal of 404534423 is 324435404.

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 404534423 - 2⁶ = 404534359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404534443) 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, 65543 + ... + 71448.

It is an arithmetic number, because the mean of its divisors is an integer number (101168592).

Almost surely, 2^404534423 is an apocalyptic number.

404534423 is a deficient number, since it is larger than the sum of its proper divisors (139945).

404534423 is a wasteful number, since it uses less digits than its factorization.

404534423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139944.

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 404534423 is about 20113.0411176431. The cubic root of 404534423 is about 739.5800045499.

Adding to 404534423 its reverse (324435404), we get a palindrome (728969827).

The spelling of 404534423 in words is "four hundred four million, five hundred thirty-four thousand, four hundred twenty-three".