84772847 has 4 divisors (see below), whose sum is σ = 84842616. Its totient is φ = 84703080.

The previous prime is 84772801. The next prime is 84772861. The reversal of 84772847 is 74827748.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84772847 - 2¹² = 84768751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84772147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33029 + ... + 35502.

It is an arithmetic number, because the mean of its divisors is an integer number (21210654).

Almost surely, 2^84772847 is an apocalyptic number.

84772847 is a deficient number, since it is larger than the sum of its proper divisors (69769).

84772847 is a wasteful number, since it uses less digits than its factorization.

84772847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69768.

The product of its digits is 702464, while the sum is 47.

The square root of 84772847 is about 9207.2171148507. The cubic root of 84772847 is about 439.2909499378.

The spelling of 84772847 in words is "eighty-four million, seven hundred seventy-two thousand, eight hundred forty-seven".