84327489 has 9 divisors (see below), whose sum is σ = 121846179. Its totient is φ = 56199960.

The previous prime is 84327479. The next prime is 84327517. The reversal of 84327489 is 98472348.

The square root of 84327489 is 9183.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 80407089 + 3920400 = 8967^2 + 1980^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 84327489 - 2¹¹ = 84325441 is a prime.

It is a super-2 number, since 2×84327489² = 14222250802090242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84327469) 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 in 8 ways as a sum of consecutive naturals, for example, 26019 + ... + 29079.

Almost surely, 2^84327489 is an apocalyptic number.

84327489 is the 9183-rd square number.

84327489 is the 4592-nd centered octagonal number.

It is an amenable number.

84327489 is a deficient number, since it is larger than the sum of its proper divisors (37518690).

84327489 is an frugal number, since it uses more digits than its factorization.

84327489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6128 (or 3064 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The cubic root of 84327489 is about 438.5203205302.

The spelling of 84327489 in words is "eighty-four million, three hundred twenty-seven thousand, four hundred eighty-nine".