84885489 has 56 divisors (see below), whose sum is σ = 140472360. Its totient is φ = 51251616.

The previous prime is 84885481. The next prime is 84885497. The reversal of 84885489 is 98458848.

84885489 is a `hidden beast` number, since 84 + 8 + 85 + 489 = 666.

It is an interprime number because it is at equal distance from previous prime (84885481) and next prime (84885497).

It can be written as a sum of positive squares in 4 ways, for example, as 17514225 + 67371264 = 4185^2 + 8208^2 .

It is not a de Polignac number, because 84885489 - 2³ = 84885481 is a prime.

It is a super-4 number, since 4×84885489⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84885481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1601587 + ... + 1601639.

It is an arithmetic number, because the mean of its divisors is an integer number (2508435).

Almost surely, 2^84885489 is an apocalyptic number.

It is an amenable number.

84885489 is a deficient number, since it is larger than the sum of its proper divisors (55586871).

84885489 is an frugal number, since it uses more digits than its factorization.

84885489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 69 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 54.

The square root of 84885489 is about 9213.3321333815. The cubic root of 84885489 is about 439.4854332439.

The spelling of 84885489 in words is "eighty-four million, eight hundred eighty-five thousand, four hundred eighty-nine".