36243409 has 2 divisors, whose sum is σ = 36243410. Its totient is φ = 36243408.

The previous prime is 36243397. The next prime is 36243419. The reversal of 36243409 is 90434263.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23619600 + 12623809 = 4860^2 + 3553^2 .

It is an emirp because it is prime and its reverse (90434263) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36243409 - 2¹³ = 36235217 is a prime.

It is not a weakly prime, because it can be changed into another prime (36243419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18121704 + 18121705.

It is an arithmetic number, because the mean of its divisors is an integer number (18121705).

Almost surely, 2^36243409 is an apocalyptic number.

It is an amenable number.

36243409 is a deficient number, since it is larger than the sum of its proper divisors (1).

36243409 is an equidigital number, since it uses as much as digits as its factorization.

36243409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 36243409 is about 6020.2499117562. The cubic root of 36243409 is about 330.9352380121.

The spelling of 36243409 in words is "thirty-six million, two hundred forty-three thousand, four hundred nine".