136382809 has 4 divisors (see below), whose sum is σ = 136625616. Its totient is φ = 136140004.

The previous prime is 136382797. The next prime is 136382819. The reversal of 136382809 is 908283631.

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 136382809 - 2⁷ = 136382681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136382819) 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, 120559 + ... + 121684.

It is an arithmetic number, because the mean of its divisors is an integer number (34156404).

Almost surely, 2^136382809 is an apocalyptic number.

It is an amenable number.

136382809 is a deficient number, since it is larger than the sum of its proper divisors (242807).

136382809 is an equidigital number, since it uses as much as digits as its factorization.

136382809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242806.

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

The square root of 136382809 is about 11678.3050568137. The cubic root of 136382809 is about 514.7383708964.

The spelling of 136382809 in words is "one hundred thirty-six million, three hundred eighty-two thousand, eight hundred nine".