84634117 has 2 divisors, whose sum is σ = 84634118. Its totient is φ = 84634116.

The previous prime is 84634091. The next prime is 84634129. The reversal of 84634117 is 71143648.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81252196 + 3381921 = 9014^2 + 1839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84634117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84634157) 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, 42317058 + 42317059.

It is an arithmetic number, because the mean of its divisors is an integer number (42317059).

Almost surely, 2^84634117 is an apocalyptic number.

It is an amenable number.

84634117 is a deficient number, since it is larger than the sum of its proper divisors (1).

84634117 is an equidigital number, since it uses as much as digits as its factorization.

84634117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 84634117 is about 9199.6802661832. The cubic root of 84634117 is about 439.0511872070.

The spelling of 84634117 in words is "eighty-four million, six hundred thirty-four thousand, one hundred seventeen".