84824213 has 2 divisors, whose sum is σ = 84824214. Its totient is φ = 84824212.

The previous prime is 84824177. The next prime is 84824219. The reversal of 84824213 is 31242848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68840209 + 15984004 = 8297^2 + 3998^2 .

It is a cyclic number.

It is not a de Polignac number, because 84824213 - 2¹² = 84820117 is a prime.

It is a super-2 number, since 2×84824213² = 14390294222138738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84824213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84824219) 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, 42412106 + 42412107.

It is an arithmetic number, because the mean of its divisors is an integer number (42412107).

Almost surely, 2^84824213 is an apocalyptic number.

It is an amenable number.

84824213 is a deficient number, since it is larger than the sum of its proper divisors (1).

84824213 is an equidigital number, since it uses as much as digits as its factorization.

84824213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12288, while the sum is 32.

The square root of 84824213 is about 9210.0061346342. The cubic root of 84824213 is about 439.3796578349.

The spelling of 84824213 in words is "eighty-four million, eight hundred twenty-four thousand, two hundred thirteen".