849740940 has 72 divisors (see below), whose sum is σ = 2580553248. Its totient is φ = 226333440.

The previous prime is 849740929. The next prime is 849740953. The reversal of 849740940 is 49047948.

It is a super-2 number, since 2×849740940² = 1444119330224167200, which contains 22 as substring.

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 189120 + ... + 193560.

Almost surely, 2^849740940 is an apocalyptic number.

It is an amenable number.

849740940 is an abundant number, since it is smaller than the sum of its proper divisors (1730812308).

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

849740940 is a wasteful number, since it uses less digits than its factorization.

849740940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5519 (or 5514 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 849740940 is about 29150.3162933098. The cubic root of 849740940 is about 947.1719923842.

The spelling of 849740940 in words is "eight hundred forty-nine million, seven hundred forty thousand, nine hundred forty".