13440653 has 2 divisors, whose sum is σ = 13440654. Its totient is φ = 13440652.

The previous prime is 13440617. The next prime is 13440677. The reversal of 13440653 is 35604431.

13440653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13053769 + 386884 = 3613^2 + 622^2 .

It is a cyclic number.

It is not a de Polignac number, because 13440653 - 2⁸ = 13440397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13440683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6720326 + 6720327.

It is an arithmetic number, because the mean of its divisors is an integer number (6720327).

Almost surely, 2^13440653 is an apocalyptic number.

It is an amenable number.

13440653 is a deficient number, since it is larger than the sum of its proper divisors (1).

13440653 is an equidigital number, since it uses as much as digits as its factorization.

13440653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 13440653 is about 3666.1496150594. The cubic root of 13440653 is about 237.7607286246.

The spelling of 13440653 in words is "thirteen million, four hundred forty thousand, six hundred fifty-three".