404622023 has 4 divisors (see below), whose sum is σ = 435746808. Its totient is φ = 373497240.

The previous prime is 404622019. The next prime is 404622073. The reversal of 404622023 is 320226404.

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 404622023 - 2² = 404622019 is a prime.

It is a super-2 number, since 2×404622023² = 327437962993225058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404622023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404622073) 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, 15562373 + ... + 15562398.

It is an arithmetic number, because the mean of its divisors is an integer number (108936702).

Almost surely, 2^404622023 is an apocalyptic number.

404622023 is a deficient number, since it is larger than the sum of its proper divisors (31124785).

404622023 is a wasteful number, since it uses less digits than its factorization.

404622023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31124784.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 404622023 is about 20115.2186913292. The cubic root of 404622023 is about 739.6333848713.

Adding to 404622023 its reverse (320226404), we get a palindrome (724848427).

The spelling of 404622023 in words is "four hundred four million, six hundred twenty-two thousand, twenty-three".