84266069 has 2 divisors, whose sum is σ = 84266070. Its totient is φ = 84266068.

The previous prime is 84266053. The next prime is 84266099. The reversal of 84266069 is 96066248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82119844 + 2146225 = 9062^2 + 1465^2 .

It is a cyclic number.

It is not a de Polignac number, because 84266069 - 2⁴ = 84266053 is a prime.

It is a super-2 number, since 2×84266069² = 14201540769425522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84266009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42133034 + 42133035.

It is an arithmetic number, because the mean of its divisors is an integer number (42133035).

Almost surely, 2^84266069 is an apocalyptic number.

It is an amenable number.

84266069 is a deficient number, since it is larger than the sum of its proper divisors (1).

84266069 is an equidigital number, since it uses as much as digits as its factorization.

84266069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 84266069 is about 9179.6551678154. The cubic root of 84266069 is about 438.4138291193.

The spelling of 84266069 in words is "eighty-four million, two hundred sixty-six thousand, sixty-nine".