134669 has 2 divisors, whose sum is σ = 134670. Its totient is φ = 134668.

The previous prime is 134639. The next prime is 134677. The reversal of 134669 is 966431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133225 + 1444 = 365^2 + 38^2 .

It is an emirp because it is prime and its reverse (966431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134669 is a prime.

It is a super-2 number, since 2×134669² = 36271479122, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67334 + 67335.

It is an arithmetic number, because the mean of its divisors is an integer number (67335).

2¹³⁴⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

134669 is a deficient number, since it is larger than the sum of its proper divisors (1).

134669 is an equidigital number, since it uses as much as digits as its factorization.

134669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 134669 is about 366.9727510320. The cubic root of 134669 is about 51.2573180111.

The spelling of 134669 in words is "one hundred thirty-four thousand, six hundred sixty-nine".