404022623405 has 16 divisors (see below), whose sum is σ = 491508655344. Its totient is φ = 318764482560.

The previous prime is 404022623401. The next prime is 404022623423. The reversal of 404022623405 is 504326220404.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 57133428676 + 346889194729 = 239026^2 + 588973^2 .

It is not a de Polignac number, because 404022623405 - 2² = 404022623401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404022623401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5312045 + ... + 5387565.

It is an arithmetic number, because the mean of its divisors is an integer number (30719290959).

Almost surely, 2^404022623405 is an apocalyptic number.

It is an amenable number.

404022623405 is a deficient number, since it is larger than the sum of its proper divisors (87486031939).

404022623405 is a wasteful number, since it uses less digits than its factorization.

404022623405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90256.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 404022623405 its reverse (504326220404), we get a palindrome (908348843809).

The spelling of 404022623405 in words is "four hundred four billion, twenty-two million, six hundred twenty-three thousand, four hundred five".