136085389 has 8 divisors (see below), whose sum is σ = 150246432. Its totient is φ = 122222640.

The previous prime is 136085377. The next prime is 136085473. The reversal of 136085389 is 983580631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136085389 - 2¹⁵ = 136052621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136085189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73614 + ... + 75439.

It is an arithmetic number, because the mean of its divisors is an integer number (18780804).

Almost surely, 2^136085389 is an apocalyptic number.

It is an amenable number.

136085389 is a deficient number, since it is larger than the sum of its proper divisors (14161043).

136085389 is a wasteful number, since it uses less digits than its factorization.

136085389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149147.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 136085389 is about 11665.5642383898. The cubic root of 136085389 is about 514.3639226556.

The spelling of 136085389 in words is "one hundred thirty-six million, eighty-five thousand, three hundred eighty-nine".