135494069 has 2 divisors, whose sum is σ = 135494070. Its totient is φ = 135494068.

The previous prime is 135493987. The next prime is 135494071. The reversal of 135494069 is 960494531.

135494069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135256900 + 237169 = 11630^2 + 487^2 .

It is an emirp because it is prime and its reverse (960494531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135494069 - 2¹⁶ = 135428533 is a prime.

It is a super-2 number, since 2×135494069² = 36717285468353522, which contains 22 as substring.

Together with 135494071, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_7671884 and since 135494069 and 7671884 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135494089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67747034 + 67747035.

It is an arithmetic number, because the mean of its divisors is an integer number (67747035).

Almost surely, 2^135494069 is an apocalyptic number.

It is an amenable number.

135494069 is a deficient number, since it is larger than the sum of its proper divisors (1).

135494069 is an equidigital number, since it uses as much as digits as its factorization.

135494069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 135494069 is about 11640.1919657710. The cubic root of 135494069 is about 513.6178340392.

The spelling of 135494069 in words is "one hundred thirty-five million, four hundred ninety-four thousand, sixty-nine".