849031040 has 128 divisors (see below), whose sum is σ = 2384817120. Its totient is φ = 284958720.

The previous prime is 849031033. The next prime is 849031049. The reversal of 849031040 is 40130948.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 849030994 and 849031012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849031049) 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, 86882 + ... + 96158.

Almost surely, 2^849031040 is an apocalyptic number.

849031040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 849031040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1192408560).

849031040 is an abundant number, since it is smaller than the sum of its proper divisors (1535786080).

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

849031040 is a wasteful number, since it uses less digits than its factorization.

849031040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9320 (or 9308 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 849031040 is about 29138.1372088196. The cubic root of 849031040 is about 946.9081532540.

Adding to 849031040 its reverse (40130948), we get a palindrome (889161988).

The spelling of 849031040 in words is "eight hundred forty-nine million, thirty-one thousand, forty".