84869647 has 8 divisors (see below), whose sum is σ = 86046800. Its totient is φ = 83700864.

The previous prime is 84869623. The next prime is 84869657. The reversal of 84869647 is 74696848.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84869647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84869594 and 84869603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84869657) 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 7 ways as a sum of consecutive naturals, for example, 19879 + ... + 23767.

It is an arithmetic number, because the mean of its divisors is an integer number (10755850).

Almost surely, 2^84869647 is an apocalyptic number.

84869647 is a deficient number, since it is larger than the sum of its proper divisors (1177153).

84869647 is a wasteful number, since it uses less digits than its factorization.

84869647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185.

The product of its digits is 2322432, while the sum is 52.

The square root of 84869647 is about 9212.4723608812. The cubic root of 84869647 is about 439.4580914627.

The spelling of 84869647 in words is "eighty-four million, eight hundred sixty-nine thousand, six hundred forty-seven".