849297909 has 8 divisors (see below), whose sum is σ = 1134469600. Its totient is φ = 565162416.

The previous prime is 849297881. The next prime is 849297949. The reversal of 849297909 is 909792948.

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

It is not a de Polignac number, because 849297909 - 2⁸ = 849297653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849297949) 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 7 ways as a sum of consecutive naturals, for example, 257134 + ... + 260415.

It is an arithmetic number, because the mean of its divisors is an integer number (141808700).

Almost surely, 2^849297909 is an apocalyptic number.

It is an amenable number.

849297909 is a deficient number, since it is larger than the sum of its proper divisors (285171691).

849297909 is a wasteful number, since it uses less digits than its factorization.

849297909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518099.

The product of its (nonzero) digits is 2939328, while the sum is 57.

The square root of 849297909 is about 29142.7162254996. The cubic root of 849297909 is about 947.0073541658.

The spelling of 849297909 in words is "eight hundred forty-nine million, two hundred ninety-seven thousand, nine hundred nine".