135946669 has 2 divisors, whose sum is σ = 135946670. Its totient is φ = 135946668.

The previous prime is 135946639. The next prime is 135946697. The reversal of 135946669 is 966649531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110565225 + 25381444 = 10515^2 + 5038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135946669 is a prime.

It is a super-2 number, since 2×135946669² = 36962993624391122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135946609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67973334 + 67973335.

It is an arithmetic number, because the mean of its divisors is an integer number (67973335).

Almost surely, 2^135946669 is an apocalyptic number.

It is an amenable number.

135946669 is a deficient number, since it is larger than the sum of its proper divisors (1).

135946669 is an equidigital number, since it uses as much as digits as its factorization.

135946669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 49.

The square root of 135946669 is about 11659.6170177240. The cubic root of 135946669 is about 514.1890892361.

The spelling of 135946669 in words is "one hundred thirty-five million, nine hundred forty-six thousand, six hundred sixty-nine".