135340889 has 2 divisors, whose sum is σ = 135340890. Its totient is φ = 135340888.

The previous prime is 135340861. The next prime is 135340897. The reversal of 135340889 is 988043531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128142400 + 7198489 = 11320^2 + 2683^2 .

It is a cyclic number.

It is not a de Polignac number, because 135340889 - 2²⁰ = 134292313 is a prime.

It is equal to p_7663676 and since 135340889 and 7663676 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (135340189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67670444 + 67670445.

It is an arithmetic number, because the mean of its divisors is an integer number (67670445).

Almost surely, 2^135340889 is an apocalyptic number.

It is an amenable number.

135340889 is a deficient number, since it is larger than the sum of its proper divisors (1).

135340889 is an equidigital number, since it uses as much as digits as its factorization.

135340889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 135340889 is about 11633.6103166644. The cubic root of 135340889 is about 513.4242077362.

The spelling of 135340889 in words is "one hundred thirty-five million, three hundred forty thousand, eight hundred eighty-nine".