84294209 has 2 divisors, whose sum is σ = 84294210. Its totient is φ = 84294208.

The previous prime is 84294191. The next prime is 84294227. The reversal of 84294209 is 90249248.

It is a balanced prime because it is at equal distance from previous prime (84294191) and next prime (84294227).

It can be written as a sum of positive squares in only one way, i.e., 50013184 + 34281025 = 7072^2 + 5855^2 .

It is a cyclic number.

It is not a de Polignac number, because 84294209 - 2¹² = 84290113 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 (84294229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42147104 + 42147105.

It is an arithmetic number, because the mean of its divisors is an integer number (42147105).

Almost surely, 2^84294209 is an apocalyptic number.

It is an amenable number.

84294209 is a deficient number, since it is larger than the sum of its proper divisors (1).

84294209 is an equidigital number, since it uses as much as digits as its factorization.

84294209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 84294209 is about 9181.1877771887. The cubic root of 84294209 is about 438.4626253203.

The spelling of 84294209 in words is "eighty-four million, two hundred ninety-four thousand, two hundred nine".