36087209 has 4 divisors (see below), whose sum is σ = 38210004. Its totient is φ = 33964416.

The previous prime is 36087203. The next prime is 36087221. The reversal of 36087209 is 90278063.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90278063 = 19 ⋅4751477.

It can be written as a sum of positive squares in 2 ways, for example, as 14899600 + 21187609 = 3860^2 + 4603^2 .

It is a cyclic number.

It is not a de Polignac number, because 36087209 - 2¹⁶ = 36021673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36087203) 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, 1061372 + ... + 1061405.

It is an arithmetic number, because the mean of its divisors is an integer number (9552501).

Almost surely, 2^36087209 is an apocalyptic number.

It is an amenable number.

36087209 is a deficient number, since it is larger than the sum of its proper divisors (2122795).

36087209 is a wasteful number, since it uses less digits than its factorization.

36087209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122794.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 36087209 is about 6007.2630207108. The cubic root of 36087209 is about 330.4591374475.

The spelling of 36087209 in words is "thirty-six million, eighty-seven thousand, two hundred nine".