135286849 has 2 divisors, whose sum is σ = 135286850. Its totient is φ = 135286848.

The previous prime is 135286831. The next prime is 135286861. The reversal of 135286849 is 948682531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114062400 + 21224449 = 10680^2 + 4607^2 .

It is an emirp because it is prime and its reverse (948682531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135286849 - 2⁵ = 135286817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135286799 and 135286808.

It is not a weakly prime, because it can be changed into another prime (135286829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67643424 + 67643425.

It is an arithmetic number, because the mean of its divisors is an integer number (67643425).

Almost surely, 2^135286849 is an apocalyptic number.

It is an amenable number.

135286849 is a deficient number, since it is larger than the sum of its proper divisors (1).

135286849 is an equidigital number, since it uses as much as digits as its factorization.

135286849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The square root of 135286849 is about 11631.2875039696. The cubic root of 135286849 is about 513.3558639218.

The spelling of 135286849 in words is "one hundred thirty-five million, two hundred eighty-six thousand, eight hundred forty-nine".