134665439 has 2 divisors, whose sum is σ = 134665440. Its totient is φ = 134665438.

The previous prime is 134665429. The next prime is 134665441. The reversal of 134665439 is 934566431.

134665439 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 is a cyclic number.

It is not a de Polignac number, because 134665439 - 2¹⁶ = 134599903 is a prime.

It is a super-2 number, since 2×134665439² = 36269560922125442, which contains 22 as substring.

Together with 134665441, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 134665396 and 134665405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134665409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67332719 + 67332720.

It is an arithmetic number, because the mean of its divisors is an integer number (67332720).

Almost surely, 2^134665439 is an apocalyptic number.

134665439 is a deficient number, since it is larger than the sum of its proper divisors (1).

134665439 is an equidigital number, since it uses as much as digits as its factorization.

134665439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 41.

The square root of 134665439 is about 11604.5438945268. The cubic root of 134665439 is about 512.5686621470.

The spelling of 134665439 in words is "one hundred thirty-four million, six hundred sixty-five thousand, four hundred thirty-nine".