13440001 has 2 divisors, whose sum is σ = 13440002. Its totient is φ = 13440000.

The previous prime is 13439939. The next prime is 13440041. The reversal of 13440001 is 10004431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9241600 + 4198401 = 3040^2 + 2049^2 .

It is a cyclic number.

It is not a de Polignac number, because 13440001 - 2¹¹ = 13437953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13440041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6720000 + 6720001.

It is an arithmetic number, because the mean of its divisors is an integer number (6720001).

Almost surely, 2^13440001 is an apocalyptic number.

It is an amenable number.

13440001 is a deficient number, since it is larger than the sum of its proper divisors (1).

13440001 is an equidigital number, since it uses as much as digits as its factorization.

13440001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 13440001 is about 3666.0606923509. The cubic root of 13440001 is about 237.7568840073.

Adding to 13440001 its reverse (10004431), we get a palindrome (23444432).

The spelling of 13440001 in words is "thirteen million, four hundred forty thousand, one".