84062009 has 2 divisors, whose sum is σ = 84062010. Its totient is φ = 84062008.

The previous prime is 84062003. The next prime is 84062029. The reversal of 84062009 is 90026048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67699984 + 16362025 = 8228^2 + 4045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84062009 is a prime.

It is not a weakly prime, because it can be changed into another prime (84062003) 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, 42031004 + 42031005.

It is an arithmetic number, because the mean of its divisors is an integer number (42031005).

Almost surely, 2^84062009 is an apocalyptic number.

It is an amenable number.

84062009 is a deficient number, since it is larger than the sum of its proper divisors (1).

84062009 is an equidigital number, since it uses as much as digits as its factorization.

84062009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 84062009 is about 9168.5336341206. The cubic root of 84062009 is about 438.0596531972.

The spelling of 84062009 in words is "eighty-four million, sixty-two thousand, nine".