134396813 has 2 divisors, whose sum is σ = 134396814. Its totient is φ = 134396812.

The previous prime is 134396809. The next prime is 134396819. The reversal of 134396813 is 318693431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121594729 + 12802084 = 11027^2 + 3578^2 .

It is a cyclic number.

It is not a de Polignac number, because 134396813 - 2² = 134396809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134396819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67198406 + 67198407.

It is an arithmetic number, because the mean of its divisors is an integer number (67198407).

Almost surely, 2^134396813 is an apocalyptic number.

It is an amenable number.

134396813 is a deficient number, since it is larger than the sum of its proper divisors (1).

134396813 is an equidigital number, since it uses as much as digits as its factorization.

134396813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 134396813 is about 11592.9639437031. The cubic root of 134396813 is about 512.2276171477.

The spelling of 134396813 in words is "one hundred thirty-four million, three hundred ninety-six thousand, eight hundred thirteen".