84148213 has 2 divisors, whose sum is σ = 84148214. Its totient is φ = 84148212.

The previous prime is 84148199. The next prime is 84148231. The reversal of 84148213 is 31284148.

Together with next prime (84148231) 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., 80156209 + 3992004 = 8953^2 + 1998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84148213 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84148613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42074106 + 42074107.

It is an arithmetic number, because the mean of its divisors is an integer number (42074107).

Almost surely, 2^84148213 is an apocalyptic number.

It is an amenable number.

84148213 is a deficient number, since it is larger than the sum of its proper divisors (1).

84148213 is an equidigital number, since it uses as much as digits as its factorization.

84148213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 31.

The square root of 84148213 is about 9173.2335084200. The cubic root of 84148213 is about 438.2093426701.

The spelling of 84148213 in words is "eighty-four million, one hundred forty-eight thousand, two hundred thirteen".