135475969 has 2 divisors, whose sum is σ = 135475970. Its totient is φ = 135475968.

The previous prime is 135475939. The next prime is 135475979. The reversal of 135475969 is 969574531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132710400 + 2765569 = 11520^2 + 1663^2 .

It is an emirp because it is prime and its reverse (969574531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135475969 - 2¹⁷ = 135344897 is a prime.

It is a super-2 number, since 2×135475969² = 36707476352977922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135475919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67737984 + 67737985.

It is an arithmetic number, because the mean of its divisors is an integer number (67737985).

Almost surely, 2^135475969 is an apocalyptic number.

It is an amenable number.

135475969 is a deficient number, since it is larger than the sum of its proper divisors (1).

135475969 is an equidigital number, since it uses as much as digits as its factorization.

135475969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 49.

The square root of 135475969 is about 11639.4144612175. The cubic root of 135475969 is about 513.5949624433.

The spelling of 135475969 in words is "one hundred thirty-five million, four hundred seventy-five thousand, nine hundred sixty-nine".