404100440121 has 8 divisors (see below), whose sum is σ = 615772099264. Its totient is φ = 230914537200.

The previous prime is 404100440101. The next prime is 404100440137. The reversal of 404100440121 is 121044001404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404100440121 - 2¹³ = 404100431929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 19242878101 = 404100440121 / (4 + 0 + 4 + 1 + 0 + 0 + 4 + 4 + 0 + 1 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (404100440101) 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 7 ways as a sum of consecutive naturals, for example, 9621439030 + ... + 9621439071.

It is an arithmetic number, because the mean of its divisors is an integer number (76971512408).

Almost surely, 2^404100440121 is an apocalyptic number.

It is an amenable number.

404100440121 is a deficient number, since it is larger than the sum of its proper divisors (211671659143).

404100440121 is a wasteful number, since it uses less digits than its factorization.

404100440121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19242878111.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 404100440121 its reverse (121044001404), we get a palindrome (525144441525).

The spelling of 404100440121 in words is "four hundred four billion, one hundred million, four hundred forty thousand, one hundred twenty-one".