84203689 has 2 divisors, whose sum is σ = 84203690. Its totient is φ = 84203688.

The previous prime is 84203659. The next prime is 84203731. The reversal of 84203689 is 98630248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56746089 + 27457600 = 7533^2 + 5240^2 .

It is a cyclic number.

It is not a de Polignac number, because 84203689 - 2¹¹ = 84201641 is a prime.

It is a super-2 number, since 2×84203689² = 14180522482417442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84203659) 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, 42101844 + 42101845.

It is an arithmetic number, because the mean of its divisors is an integer number (42101845).

Almost surely, 2^84203689 is an apocalyptic number.

It is an amenable number.

84203689 is a deficient number, since it is larger than the sum of its proper divisors (1).

84203689 is an equidigital number, since it uses as much as digits as its factorization.

84203689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 84203689 is about 9176.2568076531. The cubic root of 84203689 is about 438.3056202591.

The spelling of 84203689 in words is "eighty-four million, two hundred three thousand, six hundred eighty-nine".