13400442441 has 20 divisors (see below), whose sum is σ = 20242876500. Its totient is φ = 8833245696.

The previous prime is 13400442439. The next prime is 13400442443. The reversal of 13400442441 is 14424400431.

13400442441 is a `hidden beast` number, since 13 + 400 + 4 + 4 + 244 + 1 = 666.

13400442441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13400442439) and next prime (13400442443).

It can be written as a sum of positive squares in 2 ways, for example, as 3157990416 + 10242452025 = 56196^2 + 101205^2 .

It is not a de Polignac number, because 13400442441 - 2¹ = 13400442439 is a prime.

It is a super-2 number, since 2×13400442441² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13400442443) 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 19 ways as a sum of consecutive naturals, for example, 922216 + ... + 936633.

It is an arithmetic number, because the mean of its divisors is an integer number (1012143825).

Almost surely, 2^13400442441 is an apocalyptic number.

It is an amenable number.

13400442441 is a deficient number, since it is larger than the sum of its proper divisors (6842434059).

13400442441 is an equidigital number, since it uses as much as digits as its factorization.

13400442441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858950 (or 1858941 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 13400442441 its reverse (14424400431), we get a palindrome (27824842872).

The spelling of 13400442441 in words is "thirteen billion, four hundred million, four hundred forty-two thousand, four hundred forty-one".