852320447 has 4 divisors (see below), whose sum is σ = 929804136. Its totient is φ = 774836760.

The previous prime is 852320437. The next prime is 852320459. The reversal of 852320447 is 744023258.

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 852320447 - 2¹⁶ = 852254911 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 (852320437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38741828 + ... + 38741849.

It is an arithmetic number, because the mean of its divisors is an integer number (232451034).

Almost surely, 2^852320447 is an apocalyptic number.

852320447 is a deficient number, since it is larger than the sum of its proper divisors (77483689).

852320447 is a wasteful number, since it uses less digits than its factorization.

852320447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77483688.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 852320447 is about 29194.5276892777. The cubic root of 852320447 is about 948.1294483839.

The spelling of 852320447 in words is "eight hundred fifty-two million, three hundred twenty thousand, four hundred forty-seven".