135470789 has 2 divisors, whose sum is σ = 135470790. Its totient is φ = 135470788.

The previous prime is 135470737. The next prime is 135470791. The reversal of 135470789 is 987074531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77968900 + 57501889 = 8830^2 + 7583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135470789 is a prime.

Together with 135470791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135470089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67735394 + 67735395.

It is an arithmetic number, because the mean of its divisors is an integer number (67735395).

Almost surely, 2^135470789 is an apocalyptic number.

It is an amenable number.

135470789 is a deficient number, since it is larger than the sum of its proper divisors (1).

135470789 is an equidigital number, since it uses as much as digits as its factorization.

135470789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 135470789 is about 11639.1919393058. The cubic root of 135470789 is about 513.5884164956.

The spelling of 135470789 in words is "one hundred thirty-five million, four hundred seventy thousand, seven hundred eighty-nine".