849421287 has 24 divisors (see below), whose sum is σ = 1441444368. Its totient is φ = 475200000.

The previous prime is 849421283. The next prime is 849421333. The reversal of 849421287 is 782124948.

849421287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 849421287 - 2² = 849421283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849421283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328714 + ... + 331287.

It is an arithmetic number, because the mean of its divisors is an integer number (60060182).

Almost surely, 2^849421287 is an apocalyptic number.

849421287 is a deficient number, since it is larger than the sum of its proper divisors (592023081).

849421287 is a wasteful number, since it uses less digits than its factorization.

849421287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660031 (or 660028 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 849421287 is about 29144.8329382757. The cubic root of 849421287 is about 947.0532093814.

The spelling of 849421287 in words is "eight hundred forty-nine million, four hundred twenty-one thousand, two hundred eighty-seven".