84861489 has 8 divisors (see below), whose sum is σ = 115780192. Its totient is φ = 55258560.

The previous prime is 84861487. The next prime is 84861503. The reversal of 84861489 is 98416848.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84861489 - 2¹ = 84861487 is a prime.

It is a super-3 number, since 3×84861489³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84861481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328792 + ... + 329049.

It is an arithmetic number, because the mean of its divisors is an integer number (14472524).

Almost surely, 2^84861489 is an apocalyptic number.

It is an amenable number.

84861489 is a deficient number, since it is larger than the sum of its proper divisors (30918703).

84861489 is a wasteful number, since it uses less digits than its factorization.

84861489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657887.

The product of its digits is 442368, while the sum is 48.

The square root of 84861489 is about 9212.0295809338. The cubic root of 84861489 is about 439.4440102055. Note that the first 3 decimals are identical.

The spelling of 84861489 in words is "eighty-four million, eight hundred sixty-one thousand, four hundred eighty-nine".