87016009 has 2 divisors, whose sum is σ = 87016010. Its totient is φ = 87016008.

The previous prime is 87016003. The next prime is 87016021. The reversal of 87016009 is 90061078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67699984 + 19316025 = 8228^2 + 4395^2 .

It is a cyclic number.

It is not a de Polignac number, because 87016009 - 2³ = 87016001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87016001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43508004 + 43508005.

It is an arithmetic number, because the mean of its divisors is an integer number (43508005).

Almost surely, 2^87016009 is an apocalyptic number.

It is an amenable number.

87016009 is a deficient number, since it is larger than the sum of its proper divisors (1).

87016009 is an equidigital number, since it uses as much as digits as its factorization.

87016009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 87016009 is about 9328.2371860926. The cubic root of 87016009 is about 443.1319392923.

The spelling of 87016009 in words is "eighty-seven million, sixteen thousand, nine".