133394 has 4 divisors (see below), whose sum is σ = 200094. Its totient is φ = 66696.

The previous prime is 133391. The next prime is 133403. The reversal of 133394 is 493331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493331 = 487 ⋅1013.

It can be written as a sum of positive squares in only one way, i.e., 133225 + 169 = 365^2 + 13^2 .

It is not an unprimeable number, because it can be changed into a prime (133391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33347 + ... + 33350.

2¹³³³⁹⁴ is an apocalyptic number.

133394 is a deficient number, since it is larger than the sum of its proper divisors (66700).

133394 is an equidigital number, since it uses as much as digits as its factorization.

133394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66699.

The product of its digits is 972, while the sum is 23.

The square root of 133394 is about 365.2314334775. The cubic root of 133394 is about 51.0950425579.

The spelling of 133394 in words is "one hundred thirty-three thousand, three hundred ninety-four".