401444420213 has 4 divisors (see below), whose sum is σ = 404508881568. Its totient is φ = 398379958860.

The previous prime is 401444420191. The next prime is 401444420227. The reversal of 401444420213 is 312024444104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401444420213 - 2¹² = 401444416117 is a prime.

It is a super-2 number, since 2×401444420213² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401444420233) 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, 1532230481 + ... + 1532230742.

It is an arithmetic number, because the mean of its divisors is an integer number (101127220392).

Almost surely, 2^401444420213 is an apocalyptic number.

It is an amenable number.

401444420213 is a deficient number, since it is larger than the sum of its proper divisors (3064461355).

401444420213 is a wasteful number, since it uses less digits than its factorization.

401444420213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064461354.

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

Adding to 401444420213 its reverse (312024444104), we get a palindrome (713468864317).

The spelling of 401444420213 in words is "four hundred one billion, four hundred forty-four million, four hundred twenty thousand, two hundred thirteen".