849945240 has 192 divisors, whose sum is σ = 2924344800. Its totient is φ = 213497856.

The previous prime is 849945223. The next prime is 849945251. The reversal of 849945240 is 42549948.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2140722 + ... + 2141118.

Almost surely, 2^849945240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 849945240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1462172400).

849945240 is an abundant number, since it is smaller than the sum of its proper divisors (2074399560).

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

849945240 is a wasteful number, since it uses less digits than its factorization.

849945240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 849945240 is about 29153.8203328483. The cubic root of 849945240 is about 947.2478946280.

The spelling of 849945240 in words is "eight hundred forty-nine million, nine hundred forty-five thousand, two hundred forty".