848747521 has 4 divisors (see below), whose sum is σ = 858284100. Its totient is φ = 839210944.

The previous prime is 848747489. The next prime is 848747539. The reversal of 848747521 is 125747848.

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

It can be written as a sum of positive squares in 2 ways, for example, as 124545600 + 724201921 = 11160^2 + 26911^2 .

It is a cyclic number.

It is not a de Polignac number, because 848747521 - 2⁵ = 848747489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (848747021) 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 3 ways as a sum of consecutive naturals, for example, 4768156 + ... + 4768333.

It is an arithmetic number, because the mean of its divisors is an integer number (214571025).

Almost surely, 2^848747521 is an apocalyptic number.

It is an amenable number.

848747521 is a deficient number, since it is larger than the sum of its proper divisors (9536579).

848747521 is an equidigital number, since it uses as much as digits as its factorization.

848747521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536578.

The product of its digits is 501760, while the sum is 46.

The square root of 848747521 is about 29133.2717180889. The cubic root of 848747521 is about 946.8027404053.

The spelling of 848747521 in words is "eight hundred forty-eight million, seven hundred forty-seven thousand, five hundred twenty-one".