135459469 has 2 divisors, whose sum is σ = 135459470. Its totient is φ = 135459468.

The previous prime is 135459463. The next prime is 135459473. The reversal of 135459469 is 964954531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132940900 + 2518569 = 11530^2 + 1587^2 .

It is an emirp because it is prime and its reverse (964954531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135459469 - 2²⁷ = 1241741 is a prime.

It is a super-2 number, since 2×135459469² = 36698535483523922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135459463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67729734 + 67729735.

It is an arithmetic number, because the mean of its divisors is an integer number (67729735).

Almost surely, 2^135459469 is an apocalyptic number.

It is an amenable number.

135459469 is a deficient number, since it is larger than the sum of its proper divisors (1).

135459469 is an equidigital number, since it uses as much as digits as its factorization.

135459469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 46.

The square root of 135459469 is about 11638.7056410926. The cubic root of 135459469 is about 513.5741108708.

The spelling of 135459469 in words is "one hundred thirty-five million, four hundred fifty-nine thousand, four hundred sixty-nine".