84195689 has 2 divisors, whose sum is σ = 84195690. Its totient is φ = 84195688.

The previous prime is 84195667. The next prime is 84195701. The reversal of 84195689 is 98659148.

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., 56370064 + 27825625 = 7508^2 + 5275^2 .

It is a cyclic number.

It is not a de Polignac number, because 84195689 - 2¹² = 84191593 is a prime.

It is not a weakly prime, because it can be changed into another prime (84195649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42097844 + 42097845.

It is an arithmetic number, because the mean of its divisors is an integer number (42097845).

Almost surely, 2^84195689 is an apocalyptic number.

It is an amenable number.

84195689 is a deficient number, since it is larger than the sum of its proper divisors (1).

84195689 is an equidigital number, since it uses as much as digits as its factorization.

84195689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 50.

The square root of 84195689 is about 9175.8208897079. The cubic root of 84195689 is about 438.2917390144.

The spelling of 84195689 in words is "eighty-four million, one hundred ninety-five thousand, six hundred eighty-nine".