13405397 has 2 divisors, whose sum is σ = 13405398. Its totient is φ = 13405396.

The previous prime is 13405363. The next prime is 13405411. The reversal of 13405397 is 79350431.

It is a happy number.

13405397 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., 10719076 + 2686321 = 3274^2 + 1639^2 .

It is a cyclic number.

It is not a de Polignac number, because 13405397 - 2¹⁰ = 13404373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13405307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6702698 + 6702699.

It is an arithmetic number, because the mean of its divisors is an integer number (6702699).

Almost surely, 2^13405397 is an apocalyptic number.

It is an amenable number.

13405397 is a deficient number, since it is larger than the sum of its proper divisors (1).

13405397 is an equidigital number, since it uses as much as digits as its factorization.

13405397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 13405397 is about 3661.3381433569. The cubic root of 13405397 is about 237.5526575762.

The spelling of 13405397 in words is "thirteen million, four hundred five thousand, three hundred ninety-seven".