84226213 has 2 divisors, whose sum is σ = 84226214. Its totient is φ = 84226212.

The previous prime is 84226199. The next prime is 84226231. The reversal of 84226213 is 31262248.

Together with next prime (84226231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46009089 + 38217124 = 6783^2 + 6182^2 .

It is a cyclic number.

It is not a de Polignac number, because 84226213 - 2¹³ = 84218021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84226913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42113106 + 42113107.

It is an arithmetic number, because the mean of its divisors is an integer number (42113107).

Almost surely, 2^84226213 is an apocalyptic number.

It is an amenable number.

84226213 is a deficient number, since it is larger than the sum of its proper divisors (1).

84226213 is an equidigital number, since it uses as much as digits as its factorization.

84226213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

The square root of 84226213 is about 9177.4840234130. The cubic root of 84226213 is about 438.3446981814.

The spelling of 84226213 in words is "eighty-four million, two hundred twenty-six thousand, two hundred thirteen".