849938240 has 28 divisors (see below), whose sum is σ = 2023916196. Its totient is φ = 339975168.

The previous prime is 849938233. The next prime is 849938249. The reversal of 849938240 is 42839948.

It can be written as a sum of positive squares in 2 ways, for example, as 327175744 + 522762496 = 18088^2 + 22864^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849938249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1327709 + ... + 1328348.

Almost surely, 2^849938240 is an apocalyptic number.

849938240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

849938240 is an abundant number, since it is smaller than the sum of its proper divisors (1173977956).

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

849938240 is a wasteful number, since it uses less digits than its factorization.

849938240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656074 (or 2656064 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 849938240 is about 29153.7002797244. The cubic root of 849938240 is about 947.2452941650.

The spelling of 849938240 in words is "eight hundred forty-nine million, nine hundred thirty-eight thousand, two hundred forty".