401244404321 has 4 divisors (see below), whose sum is σ = 401312637444. Its totient is φ = 401176171200.

The previous prime is 401244404299. The next prime is 401244404333. The reversal of 401244404321 is 123404442104.

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 182875114321 + 218369290000 = 427639^2 + 467300^2 .

It is a cyclic number.

It is not a de Polignac number, because 401244404321 - 2⁶ = 401244404257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401244404021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34107740 + ... + 34119501.

It is an arithmetic number, because the mean of its divisors is an integer number (100328159361).

Almost surely, 2^401244404321 is an apocalyptic number.

It is an amenable number.

401244404321 is a deficient number, since it is larger than the sum of its proper divisors (68233123).

401244404321 is an equidigital number, since it uses as much as digits as its factorization.

401244404321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68233122.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 401244404321 its reverse (123404442104), we get a palindrome (524648846425).

The spelling of 401244404321 in words is "four hundred one billion, two hundred forty-four million, four hundred four thousand, three hundred twenty-one".