849225609 has 6 divisors (see below), whose sum is σ = 1226659226. Its totient is φ = 566150400.

The previous prime is 849225607. The next prime is 849225613. The reversal of 849225609 is 906522948.

849225609 is a `hidden beast` number, since 84 + 9 + 2 + 2 + 560 + 9 = 666.

849225609 is digitally balanced in base 2, 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 only one way, i.e., 454329225 + 394896384 = 21315^2 + 19872^2 .

It is not a de Polignac number, because 849225609 - 2¹ = 849225607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849225607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47179192 + ... + 47179209.

Almost surely, 2^849225609 is an apocalyptic number.

It is an amenable number.

849225609 is a deficient number, since it is larger than the sum of its proper divisors (377433617).

849225609 is a wasteful number, since it uses less digits than its factorization.

849225609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94358407 (or 94358404 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 849225609 is about 29141.4757519244. The cubic root of 849225609 is about 946.9804807629.

The spelling of 849225609 in words is "eight hundred forty-nine million, two hundred twenty-five thousand, six hundred nine".