8522439385 has 8 divisors (see below), whose sum is σ = 10367022600. Its totient is φ = 6724554624.

The previous prime is 8522439383. The next prime is 8522439397. The reversal of 8522439385 is 5839342258.

It is a happy number.

8522439385 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1947986496 + 6574452889 = 44136^2 + 81083^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8522439385 - 2¹ = 8522439383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8522439383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11674210 + ... + 11674939.

It is an arithmetic number, because the mean of its divisors is an integer number (1295877825).

Almost surely, 2^8522439385 is an apocalyptic number.

It is an amenable number.

8522439385 is a deficient number, since it is larger than the sum of its proper divisors (1844583215).

8522439385 is a wasteful number, since it uses less digits than its factorization.

8522439385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23349227.

The product of its digits is 2073600, while the sum is 49.

The square root of 8522439385 is about 92317.0590140306. The cubic root of 8522439385 is about 2042.6218519670.

It can be divided in two parts, 85224 and 39385, that added together give a square (124609 = 353²).

The spelling of 8522439385 in words is "eight billion, five hundred twenty-two million, four hundred thirty-nine thousand, three hundred eighty-five".