134639369 has 4 divisors (see below), whose sum is σ = 134928144. Its totient is φ = 134350596.

The previous prime is 134639333. The next prime is 134639389. The reversal of 134639369 is 963936431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 134639369 - 2²⁴ = 117862153 is a prime.

It is a super-2 number, since 2×134639369² = 36255519369436322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134639389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143687 + ... + 144620.

It is an arithmetic number, because the mean of its divisors is an integer number (33732036).

Almost surely, 2^134639369 is an apocalyptic number.

It is an amenable number.

134639369 is a deficient number, since it is larger than the sum of its proper divisors (288775).

134639369 is an equidigital number, since it uses as much as digits as its factorization.

134639369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288774.

The product of its digits is 314928, while the sum is 44.

The square root of 134639369 is about 11603.4205732620. The cubic root of 134639369 is about 512.5355838073.

The spelling of 134639369 in words is "one hundred thirty-four million, six hundred thirty-nine thousand, three hundred sixty-nine".