849205136 has 40 divisors (see below), whose sum is σ = 1773912504. Its totient is φ = 391495680.

The previous prime is 849205129. The next prime is 849205139. The reversal of 849205136 is 631502948.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10523536 + 838681600 = 3244^2 + 28960^2 .

It is a super-2 number, since 2×849205136² = 1442298726017556992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 849205136.

It is not an unprimeable number, because it can be changed into a prime (849205139) 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, 243920 + ... + 247376.

Almost surely, 2^849205136 is an apocalyptic number.

It is an amenable number.

849205136 is an abundant number, since it is smaller than the sum of its proper divisors (924707368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

849205136 is a wasteful number, since it uses less digits than its factorization.

849205136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4659 (or 4653 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 849205136 is about 29141.1244807060. The cubic root of 849205136 is about 946.9728708153.

The spelling of 849205136 in words is "eight hundred forty-nine million, two hundred five thousand, one hundred thirty-six".