404432423 has 4 divisors (see below), whose sum is σ = 425718360. Its totient is φ = 383146488.

The previous prime is 404432411. The next prime is 404432429. The reversal of 404432423 is 324234404.

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 404432423 - 2⁴ = 404432407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404432392 and 404432401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404432429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10642940 + ... + 10642977.

It is an arithmetic number, because the mean of its divisors is an integer number (106429590).

Almost surely, 2^404432423 is an apocalyptic number.

404432423 is a deficient number, since it is larger than the sum of its proper divisors (21285937).

404432423 is a wasteful number, since it uses less digits than its factorization.

404432423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21285936.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 404432423 is about 20110.5052895247. The cubic root of 404432423 is about 739.5178396699.

Adding to 404432423 its reverse (324234404), we get a palindrome (728666827).

The spelling of 404432423 in words is "four hundred four million, four hundred thirty-two thousand, four hundred twenty-three".