849423013 has 4 divisors (see below), whose sum is σ = 849539340. Its totient is φ = 849306688.

The previous prime is 849423007. The next prime is 849423017. The reversal of 849423013 is 310324948.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 539029089 + 310393924 = 23217^2 + 17618^2 .

It is a cyclic number.

It is not a de Polignac number, because 849423013 - 2²¹ = 847325861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 849423013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849423017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46420 + ... + 62077.

It is an arithmetic number, because the mean of its divisors is an integer number (212384835).

Almost surely, 2^849423013 is an apocalyptic number.

It is an amenable number.

849423013 is a deficient number, since it is larger than the sum of its proper divisors (116327).

849423013 is a wasteful number, since it uses less digits than its factorization.

849423013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116326.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 849423013 is about 29144.8625489982. The cubic root of 849423013 is about 947.0538508427.

The spelling of 849423013 in words is "eight hundred forty-nine million, four hundred twenty-three thousand, thirteen".