84408617 has 2 divisors, whose sum is σ = 84408618. Its totient is φ = 84408616.

The previous prime is 84408607. The next prime is 84408637. The reversal of 84408617 is 71680448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74321641 + 10086976 = 8621^2 + 3176^2 .

It is a cyclic number.

It is not a de Polignac number, because 84408617 - 2⁴ = 84408601 is a prime.

It is a super-3 number, since 3×84408617³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (84408607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42204308 + 42204309.

It is an arithmetic number, because the mean of its divisors is an integer number (42204309).

Almost surely, 2^84408617 is an apocalyptic number.

It is an amenable number.

84408617 is a deficient number, since it is larger than the sum of its proper divisors (1).

84408617 is an equidigital number, since it uses as much as digits as its factorization.

84408617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 84408617 is about 9187.4162309106. The cubic root of 84408617 is about 438.6609028964.

The spelling of 84408617 in words is "eighty-four million, four hundred eight thousand, six hundred seventeen".