135841397 has 2 divisors, whose sum is σ = 135841398. Its totient is φ = 135841396.

The previous prime is 135841357. The next prime is 135841439. The reversal of 135841397 is 793148531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133310116 + 2531281 = 11546^2 + 1591^2 .

It is a cyclic number.

It is not a de Polignac number, because 135841397 - 2⁶ = 135841333 is a prime.

It is a super-3 number, since 3×135841397³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135841357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67920698 + 67920699.

It is an arithmetic number, because the mean of its divisors is an integer number (67920699).

Almost surely, 2^135841397 is an apocalyptic number.

It is an amenable number.

135841397 is a deficient number, since it is larger than the sum of its proper divisors (1).

135841397 is an equidigital number, since it uses as much as digits as its factorization.

135841397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 135841397 is about 11655.1017584575. The cubic root of 135841397 is about 514.0563320497.

The spelling of 135841397 in words is "one hundred thirty-five million, eight hundred forty-one thousand, three hundred ninety-seven".