849649250 has 32 divisors (see below), whose sum is σ = 1645403760. Its totient is φ = 328137600.

The previous prime is 849649243. The next prime is 849649253. The reversal of 849649250 is 52946948.

It can be written as a sum of positive squares in 8 ways, for example, as 6385729 + 843263521 = 2527^2 + 29039^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 849649195 and 849649204.

It is not an unprimeable number, because it can be changed into a prime (849649253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51347 + ... + 65846.

Almost surely, 2^849649250 is an apocalyptic number.

849649250 is a deficient number, since it is larger than the sum of its proper divisors (795754510).

849649250 is a wasteful number, since it uses less digits than its factorization.

849649250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117239 (or 117229 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 849649250 is about 29148.7435406743. The cubic root of 849649250 is about 947.1379234424.

The spelling of 849649250 in words is "eight hundred forty-nine million, six hundred forty-nine thousand, two hundred fifty".