404421144413 has 16 divisors (see below), whose sum is σ = 475153014336. Its totient is φ = 339353763840.

The previous prime is 404421144401. The next prime is 404421144419. The reversal of 404421144413 is 314441124404.

It is not a de Polignac number, because 404421144413 - 2⁶ = 404421144349 is a prime.

It is a super-2 number, since 2×404421144413² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404421144413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404421144419) 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, 2559206 + ... + 2712632.

It is an arithmetic number, because the mean of its divisors is an integer number (29697063396).

Almost surely, 2^404421144413 is an apocalyptic number.

It is an amenable number.

404421144413 is a deficient number, since it is larger than the sum of its proper divisors (70731869923).

404421144413 is a wasteful number, since it uses less digits than its factorization.

404421144413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171884.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 404421144413 its reverse (314441124404), we get a palindrome (718862268817).

The spelling of 404421144413 in words is "four hundred four billion, four hundred twenty-one million, one hundred forty-four thousand, four hundred thirteen".