36243947 has 2 divisors, whose sum is σ = 36243948. Its totient is φ = 36243946.

The previous prime is 36243937. The next prime is 36243971. The reversal of 36243947 is 74934263.

It is a weak prime.

It is an emirp because it is prime and its reverse (74934263) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36243947 - 2⁴ = 36243931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36243947.

It is not a weakly prime, because it can be changed into another prime (36243937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18121973 + 18121974.

It is an arithmetic number, because the mean of its divisors is an integer number (18121974).

Almost surely, 2^36243947 is an apocalyptic number.

36243947 is a deficient number, since it is larger than the sum of its proper divisors (1).

36243947 is an equidigital number, since it uses as much as digits as its factorization.

36243947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 38.

The square root of 36243947 is about 6020.2945941208. The cubic root of 36243947 is about 330.9368754801.

The spelling of 36243947 in words is "thirty-six million, two hundred forty-three thousand, nine hundred forty-seven".