999982213 has 2 divisors, whose sum is σ = 999982214. Its totient is φ = 999982212.

The previous prime is 999982189. The next prime is 999982229. The reversal of 999982213 is 312289999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 999950884 + 31329 = 31622^2 + 177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999982213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999982253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499991106 + 499991107.

It is an arithmetic number, because the mean of its divisors is an integer number (499991107).

Almost surely, 2^999982213 is an apocalyptic number.

It is an amenable number.

999982213 is a deficient number, since it is larger than the sum of its proper divisors (1).

999982213 is an equidigital number, since it uses as much as digits as its factorization.

999982213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 52.

The square root of 999982213 is about 31622.4953632695. The cubic root of 999982213 is about 999.9940709648.

The spelling of 999982213 in words is "nine hundred ninety-nine million, nine hundred eighty-two thousand, two hundred thirteen".