84984817 has 2 divisors, whose sum is σ = 84984818. Its totient is φ = 84984816.

The previous prime is 84984791. The next prime is 84984829. The reversal of 84984817 is 71848948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65351056 + 19633761 = 8084^2 + 4431^2 .

It is a cyclic number.

It is not a de Polignac number, because 84984817 - 2⁷ = 84984689 is a prime.

It is not a weakly prime, because it can be changed into another prime (84984217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42492408 + 42492409.

It is an arithmetic number, because the mean of its divisors is an integer number (42492409).

Almost surely, 2^84984817 is an apocalyptic number.

It is an amenable number.

84984817 is a deficient number, since it is larger than the sum of its proper divisors (1).

84984817 is an equidigital number, since it uses as much as digits as its factorization.

84984817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 49.

The square root of 84984817 is about 9218.7210067341. The cubic root of 84984817 is about 439.6567864158.

The spelling of 84984817 in words is "eighty-four million, nine hundred eighty-four thousand, eight hundred seventeen".