852709247 has 4 divisors (see below), whose sum is σ = 918302280. Its totient is φ = 787116216.

The previous prime is 852709223. The next prime is 852709259. The reversal of 852709247 is 742907258.

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 852709247 - 2¹⁰ = 852708223 is a prime.

It is a super-2 number, since 2×852709247² = 1454226119838614018, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 852709198 and 852709207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (852709147) 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, 32796497 + ... + 32796522.

It is an arithmetic number, because the mean of its divisors is an integer number (229575570).

Almost surely, 2^852709247 is an apocalyptic number.

852709247 is a deficient number, since it is larger than the sum of its proper divisors (65593033).

852709247 is a wasteful number, since it uses less digits than its factorization.

852709247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65593032.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 852709247 is about 29201.1857122275. The cubic root of 852709247 is about 948.2735947522.

The spelling of 852709247 in words is "eight hundred fifty-two million, seven hundred nine thousand, two hundred forty-seven".