84289657 has 2 divisors, whose sum is σ = 84289658. Its totient is φ = 84289656.

The previous prime is 84289627. The next prime is 84289703. The reversal of 84289657 is 75698248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43086096 + 41203561 = 6564^2 + 6419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84289657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84289657.

It is not a weakly prime, because it can be changed into another prime (84289627) 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, 42144828 + 42144829.

It is an arithmetic number, because the mean of its divisors is an integer number (42144829).

Almost surely, 2^84289657 is an apocalyptic number.

It is an amenable number.

84289657 is a deficient number, since it is larger than the sum of its proper divisors (1).

84289657 is an equidigital number, since it uses as much as digits as its factorization.

84289657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The square root of 84289657 is about 9180.9398756336. The cubic root of 84289657 is about 438.4547326555.

The spelling of 84289657 in words is "eighty-four million, two hundred eighty-nine thousand, six hundred fifty-seven".