84835217 has 2 divisors, whose sum is σ = 84835218. Its totient is φ = 84835216.

The previous prime is 84835169. The next prime is 84835249. The reversal of 84835217 is 71253848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78925456 + 5909761 = 8884^2 + 2431^2 .

It is a cyclic number.

It is not a de Polignac number, because 84835217 - 2²⁰ = 83786641 is a prime.

It is not a weakly prime, because it can be changed into another prime (84835277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42417608 + 42417609.

It is an arithmetic number, because the mean of its divisors is an integer number (42417609).

Almost surely, 2^84835217 is an apocalyptic number.

It is an amenable number.

84835217 is a deficient number, since it is larger than the sum of its proper divisors (1).

84835217 is an equidigital number, since it uses as much as digits as its factorization.

84835217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 84835217 is about 9210.6035089998. The cubic root of 84835217 is about 439.3986568311.

The spelling of 84835217 in words is "eighty-four million, eight hundred thirty-five thousand, two hundred seventeen".