36387209 has 2 divisors, whose sum is σ = 36387210. Its totient is φ = 36387208.

The previous prime is 36387193. The next prime is 36387227. The reversal of 36387209 is 90278363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36060025 + 327184 = 6005^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 36387209 - 2⁴ = 36387193 is a prime.

It is not a weakly prime, because it can be changed into another prime (36387229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18193604 + 18193605.

It is an arithmetic number, because the mean of its divisors is an integer number (18193605).

Almost surely, 2^36387209 is an apocalyptic number.

It is an amenable number.

36387209 is a deficient number, since it is larger than the sum of its proper divisors (1).

36387209 is an equidigital number, since it uses as much as digits as its factorization.

36387209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 36387209 is about 6032.1811146550. The cubic root of 36387209 is about 331.3723353056.

The spelling of 36387209 in words is "thirty-six million, three hundred eighty-seven thousand, two hundred nine".