404424423 has 24 divisors (see below), whose sum is σ = 630433440. Its totient is φ = 248351040.

The previous prime is 404424421. The next prime is 404424437. The reversal of 404424423 is 324424404.

It is a happy number.

It is not a de Polignac number, because 404424423 - 2¹ = 404424421 is a prime.

It is a super-2 number, since 2×404424423² = 327118227837765858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404424421) 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, 56158 + ... + 62948.

It is an arithmetic number, because the mean of its divisors is an integer number (26268060).

Almost surely, 2^404424423 is an apocalyptic number.

404424423 is a deficient number, since it is larger than the sum of its proper divisors (226009017).

404424423 is a wasteful number, since it uses less digits than its factorization.

404424423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7319 (or 7316 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

The square root of 404424423 is about 20110.3063875218. The cubic root of 404424423 is about 739.5129635510.

Adding to 404424423 its reverse (324424404), we get a palindrome (728848827).

The spelling of 404424423 in words is "four hundred four million, four hundred twenty-four thousand, four hundred twenty-three".