36144389 has 4 divisors (see below), whose sum is σ = 36159180. Its totient is φ = 36129600.

The previous prime is 36144379. The next prime is 36144401. The reversal of 36144389 is 98344163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98344163 = 47 ⋅2092429.

It can be written as a sum of positive squares in 2 ways, for example, as 30991489 + 5152900 = 5567^2 + 2270^2 .

It is a cyclic number.

It is not a de Polignac number, because 36144389 - 2⁴ = 36144373 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 (36144349) 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, 2762 + ... + 8939.

It is an arithmetic number, because the mean of its divisors is an integer number (9039795).

Almost surely, 2^36144389 is an apocalyptic number.

It is an amenable number.

36144389 is a deficient number, since it is larger than the sum of its proper divisors (14791).

36144389 is a wasteful number, since it uses less digits than its factorization.

36144389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14790.

The product of its digits is 62208, while the sum is 38.

The square root of 36144389 is about 6012.0203758803. The cubic root of 36144389 is about 330.6335822878.

The spelling of 36144389 in words is "thirty-six million, one hundred forty-four thousand, three hundred eighty-nine".