423423405 has 12 divisors (see below), whose sum is σ = 733933980. Its totient is φ = 225825792.

The previous prime is 423423367. The next prime is 423423409. The reversal of 423423405 is 504324324.

423423405 is a `hidden beast` number, since 4 + 234 + 23 + 405 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70509609 + 352913796 = 8397^2 + 18786^2 .

It is not a de Polignac number, because 423423405 - 2¹¹ = 423421357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423423409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4704660 + ... + 4704749.

It is an arithmetic number, because the mean of its divisors is an integer number (61161165).

Almost surely, 2^423423405 is an apocalyptic number.

423423405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

423423405 is a deficient number, since it is larger than the sum of its proper divisors (310510575).

423423405 is a wasteful number, since it uses less digits than its factorization.

423423405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9409420 (or 9409417 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 423423405 is about 20577.2545544832. The cubic root of 423423405 is about 750.9164530290.

Adding to 423423405 its reverse (504324324), we get a palindrome (927747729).

The spelling of 423423405 in words is "four hundred twenty-three million, four hundred twenty-three thousand, four hundred five".