8736989 has 2 divisors, whose sum is σ = 8736990. Its totient is φ = 8736988.

The previous prime is 8736943. The next prime is 8737021. The reversal of 8736989 is 9896378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7896100 + 840889 = 2810^2 + 917^2 .

It is a cyclic number.

It is not a de Polignac number, because 8736989 - 2²⁰ = 7688413 is a prime.

It is a super-2 number, since 2×8736989² = 152669953572242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8736919) 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, 4368494 + 4368495.

It is an arithmetic number, because the mean of its divisors is an integer number (4368495).

Almost surely, 2^8736989 is an apocalyptic number.

It is an amenable number.

8736989 is a deficient number, since it is larger than the sum of its proper divisors (1).

8736989 is an equidigital number, since it uses as much as digits as its factorization.

8736989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 8736989 is about 2955.8398129804. The cubic root of 8736989 is about 205.9620770987.

The spelling of 8736989 in words is "eight million, seven hundred thirty-six thousand, nine hundred eighty-nine".