136328009 has 4 divisors (see below), whose sum is σ = 138053760. Its totient is φ = 134602260.

The previous prime is 136327949. The next prime is 136328033. The reversal of 136328009 is 900823631.

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, and also an emirpimes, since its reverse is a distinct semiprime: 900823631 = 12281 ⋅73351.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136328009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136328039) 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, 862757 + ... + 862914.

It is an arithmetic number, because the mean of its divisors is an integer number (34513440).

Almost surely, 2^136328009 is an apocalyptic number.

It is an amenable number.

136328009 is a deficient number, since it is larger than the sum of its proper divisors (1725751).

136328009 is an equidigital number, since it uses as much as digits as its factorization.

136328009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725750.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 136328009 is about 11675.9585901972. The cubic root of 136328009 is about 514.6694192892.

The spelling of 136328009 in words is "one hundred thirty-six million, three hundred twenty-eight thousand, nine".