404344423 has 12 divisors (see below), whose sum is σ = 473088600. Its totient is φ = 344570352.

The previous prime is 404344411. The next prime is 404344427. The reversal of 404344423 is 324443404.

It is a de Polignac number, because none of the positive numbers 2^k-404344423 is a prime.

It is a super-2 number, since 2×404344423² = 326988824822405858, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 404344391 and 404344400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404344427) 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, 15373 + ... + 32326.

It is an arithmetic number, because the mean of its divisors is an integer number (39424050).

Almost surely, 2^404344423 is an apocalyptic number.

404344423 is a deficient number, since it is larger than the sum of its proper divisors (68744177).

404344423 is a wasteful number, since it uses less digits than its factorization.

404344423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47886 (or 47879 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

The square root of 404344423 is about 20108.3172592835. The cubic root of 404344423 is about 739.4641988250.

Adding to 404344423 its reverse (324443404), we get a palindrome (728787827).

The spelling of 404344423 in words is "four hundred four million, three hundred forty-four thousand, four hundred twenty-three".