84989547 has 16 divisors (see below), whose sum is σ = 126091680. Its totient is φ = 56578176.

The previous prime is 84989539. The next prime is 84989551. The reversal of 84989547 is 74598948.

84989547 is a `hidden beast` number, since 8 + 4 + 98 + 9 + 547 = 666.

It is not a de Polignac number, because 84989547 - 2³ = 84989539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84989493 and 84989502.

It is not an unprimeable number, because it can be changed into a prime (84989747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21303 + ... + 24975.

It is an arithmetic number, because the mean of its divisors is an integer number (7880730).

Almost surely, 2^84989547 is an apocalyptic number.

84989547 is a deficient number, since it is larger than the sum of its proper divisors (41102133).

84989547 is a wasteful number, since it uses less digits than its factorization.

84989547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539 (or 4533 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 84989547 is about 9218.9775463443. The cubic root of 84989547 is about 439.6649429238.

The spelling of 84989547 in words is "eighty-four million, nine hundred eighty-nine thousand, five hundred forty-seven".