134381389 has 4 divisors (see below), whose sum is σ = 139015260. Its totient is φ = 129747520.

The previous prime is 134381381. The next prime is 134381411. The reversal of 134381389 is 983183431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92352100 + 42029289 = 9610^2 + 6483^2 .

It is a cyclic number.

It is not a de Polignac number, because 134381389 - 2³ = 134381381 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134381381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2316892 + ... + 2316949.

It is an arithmetic number, because the mean of its divisors is an integer number (34753815).

Almost surely, 2^134381389 is an apocalyptic number.

It is an amenable number.

134381389 is a deficient number, since it is larger than the sum of its proper divisors (4633871).

134381389 is an equidigital number, since it uses as much as digits as its factorization.

134381389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633870.

The product of its digits is 62208, while the sum is 40.

The square root of 134381389 is about 11592.2986935293. The cubic root of 134381389 is about 512.2080211944.

The spelling of 134381389 in words is "one hundred thirty-four million, three hundred eighty-one thousand, three hundred eighty-nine".