13443401 has 4 divisors (see below), whose sum is σ = 13501332. Its totient is φ = 13385472.

The previous prime is 13443389. The next prime is 13443407. The reversal of 13443401 is 10434431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10434431 = 7 ⋅1490633.

It can be written as a sum of positive squares in 2 ways, for example, as 8497225 + 4946176 = 2915^2 + 2224^2 .

It is a cyclic number.

It is not a de Polignac number, because 13443401 - 2⁶ = 13443337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13443407) 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, 28616 + ... + 29081.

It is an arithmetic number, because the mean of its divisors is an integer number (3375333).

Almost surely, 2^13443401 is an apocalyptic number.

It is an amenable number.

13443401 is a deficient number, since it is larger than the sum of its proper divisors (57931).

13443401 is an equidigital number, since it uses as much as digits as its factorization.

13443401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57930.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 13443401 is about 3666.5243760270. The cubic root of 13443401 is about 237.7769312590.

Adding to 13443401 its reverse (10434431), we get a palindrome (23877832).

The spelling of 13443401 in words is "thirteen million, four hundred forty-three thousand, four hundred one".