36047989 has 2 divisors, whose sum is σ = 36047990. Its totient is φ = 36047988.

The previous prime is 36047981. The next prime is 36047993. The reversal of 36047989 is 98974063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19580625 + 16467364 = 4425^2 + 4058^2 .

It is a cyclic number.

It is not a de Polignac number, because 36047989 - 2³ = 36047981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36047981) 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, 18023994 + 18023995.

It is an arithmetic number, because the mean of its divisors is an integer number (18023995).

Almost surely, 2^36047989 is an apocalyptic number.

It is an amenable number.

36047989 is a deficient number, since it is larger than the sum of its proper divisors (1).

36047989 is an equidigital number, since it uses as much as digits as its factorization.

36047989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 36047989 is about 6003.9977514986. The cubic root of 36047989 is about 330.3393784358.

The spelling of 36047989 in words is "thirty-six million, forty-seven thousand, nine hundred eighty-nine".