134993 has 4 divisors (see below), whose sum is σ = 137268. Its totient is φ = 132720.

The previous prime is 134989. The next prime is 134999. The reversal of 134993 is 399431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399431 = 107 ⋅3733.

It can be written as a sum of positive squares in 2 ways, for example, as 73984 + 61009 = 272^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 134993 - 2² = 134989 is a prime.

It is a super-2 number, since 2×134993² = 36446220098, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (134999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046 + ... + 1167.

It is an arithmetic number, because the mean of its divisors is an integer number (34317).

2¹³⁴⁹⁹³ is an apocalyptic number.

It is an amenable number.

134993 is a deficient number, since it is larger than the sum of its proper divisors (2275).

134993 is an equidigital number, since it uses as much as digits as its factorization.

134993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274.

The product of its digits is 2916, while the sum is 29.

The square root of 134993 is about 367.4139355005. The cubic root of 134993 is about 51.2983917308.

The spelling of 134993 in words is "one hundred thirty-four thousand, nine hundred ninety-three".