134199685 has 4 divisors (see below), whose sum is σ = 161039628. Its totient is φ = 107359744.

The previous prime is 134199677. The next prime is 134199707. The reversal of 134199685 is 586991431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586991431 = 13 ⋅45153187.

It can be written as a sum of positive squares in 2 ways, for example, as 56460196 + 77739489 = 7514^2 + 8817^2 .

It is a cyclic number.

It is not a de Polignac number, because 134199685 - 2³ = 134199677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13419964 + ... + 13419973.

It is an arithmetic number, because the mean of its divisors is an integer number (40259907).

Almost surely, 2^134199685 is an apocalyptic number.

It is an amenable number.

134199685 is a deficient number, since it is larger than the sum of its proper divisors (26839943).

134199685 is an equidigital number, since it uses as much as digits as its factorization.

134199685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26839942.

The product of its digits is 233280, while the sum is 46.

The square root of 134199685 is about 11584.4587702663. The cubic root of 134199685 is about 511.9770561109.

It can be divided in two parts, 13419 and 9685, that added together give a square (23104 = 152²).

The spelling of 134199685 in words is "one hundred thirty-four million, one hundred ninety-nine thousand, six hundred eighty-five".