84233609 has 2 divisors, whose sum is σ = 84233610. Its totient is φ = 84233608.

The previous prime is 84233581. The next prime is 84233627. The reversal of 84233609 is 90633248.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75203584 + 9030025 = 8672^2 + 3005^2 .

It is a cyclic number.

It is not a de Polignac number, because 84233609 - 2¹² = 84229513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (84233309) 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, 42116804 + 42116805.

It is an arithmetic number, because the mean of its divisors is an integer number (42116805).

Almost surely, 2^84233609 is an apocalyptic number.

It is an amenable number.

84233609 is a deficient number, since it is larger than the sum of its proper divisors (1).

84233609 is an equidigital number, since it uses as much as digits as its factorization.

84233609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 84233609 is about 9177.8869572467. The cubic root of 84233609 is about 438.3575283221.

The spelling of 84233609 in words is "eighty-four million, two hundred thirty-three thousand, six hundred nine".