36287989 has 2 divisors, whose sum is σ = 36287990. Its totient is φ = 36287988.

The previous prime is 36287983. The next prime is 36288017. The reversal of 36287989 is 98978263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24502500 + 11785489 = 4950^2 + 3433^2 .

It is an emirp because it is prime and its reverse (98978263) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36287989 - 2⁹ = 36287477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36287983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18143994 + 18143995.

It is an arithmetic number, because the mean of its divisors is an integer number (18143995).

Almost surely, 2^36287989 is an apocalyptic number.

It is an amenable number.

36287989 is a deficient number, since it is larger than the sum of its proper divisors (1).

36287989 is an equidigital number, since it uses as much as digits as its factorization.

36287989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 36287989 is about 6023.9512780234. The cubic root of 36287989 is about 331.0708677132.

The spelling of 36287989 in words is "thirty-six million, two hundred eighty-seven thousand, nine hundred eighty-nine".