85982213 has 2 divisors, whose sum is σ = 85982214. Its totient is φ = 85982212.

The previous prime is 85982179. The next prime is 85982227. The reversal of 85982213 is 31228958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55323844 + 30658369 = 7438^2 + 5537^2 .

It is a cyclic number.

It is not a de Polignac number, because 85982213 - 2¹⁴ = 85965829 is a prime.

It is a Sophie Germain 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 (85982233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42991106 + 42991107.

It is an arithmetic number, because the mean of its divisors is an integer number (42991107).

Almost surely, 2^85982213 is an apocalyptic number.

It is an amenable number.

85982213 is a deficient number, since it is larger than the sum of its proper divisors (1).

85982213 is an equidigital number, since it uses as much as digits as its factorization.

85982213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 85982213 is about 9272.6594351351. The cubic root of 85982213 is about 441.3700631746.

The spelling of 85982213 in words is "eighty-five million, nine hundred eighty-two thousand, two hundred thirteen".