404423220101 has 4 divisors (see below), whose sum is σ = 404437133100. Its totient is φ = 404409307104.

The previous prime is 404423220079. The next prime is 404423220119. The reversal of 404423220101 is 101022324404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220360769476 + 184062450625 = 469426^2 + 429025^2 .

It is a cyclic number.

It is not a de Polignac number, because 404423220101 - 2¹⁸ = 404422957957 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 (404423220151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6912806 + ... + 6971063.

It is an arithmetic number, because the mean of its divisors is an integer number (101109283275).

Almost surely, 2^404423220101 is an apocalyptic number.

It is an amenable number.

404423220101 is a deficient number, since it is larger than the sum of its proper divisors (13912999).

404423220101 is a wasteful number, since it uses less digits than its factorization.

404423220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13912998.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 404423220101 its reverse (101022324404), we get a palindrome (505445544505).

The spelling of 404423220101 in words is "four hundred four billion, four hundred twenty-three million, two hundred twenty thousand, one hundred one".