404252423 has 4 divisors (see below), whose sum is σ = 405397968. Its totient is φ = 403106880.

The previous prime is 404252377. The next prime is 404252441. The reversal of 404252423 is 324252404.

It is a happy number.

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 404252423 - 2¹⁰ = 404251399 is a prime.

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 = 404252392 and 404252401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404252323) 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, 572243 + ... + 572948.

It is an arithmetic number, because the mean of its divisors is an integer number (101349492).

Almost surely, 2^404252423 is an apocalyptic number.

404252423 is a deficient number, since it is larger than the sum of its proper divisors (1145545).

404252423 is a wasteful number, since it uses less digits than its factorization.

404252423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145544.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 404252423 is about 20106.0295185300. The cubic root of 404252423 is about 739.4081114379.

It can be divided in two parts, 4042 and 52423, that added together give a palindrome (56465).

The spelling of 404252423 in words is "four hundred four million, two hundred fifty-two thousand, four hundred twenty-three".