844866490 has 48 divisors (see below), whose sum is σ = 1657382688. Its totient is φ = 309935808.

The previous prime is 844866487. The next prime is 844866511. The reversal of 844866490 is 94668448.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 273937 + ... + 277003.

It is an arithmetic number, because the mean of its divisors is an integer number (34528806).

Almost surely, 2^844866490 is an apocalyptic number.

844866490 is a deficient number, since it is larger than the sum of its proper divisors (812516198).

844866490 is a wasteful number, since it uses less digits than its factorization.

844866490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

The square root of 844866490 is about 29066.5871749678. The cubic root of 844866490 is about 945.3574005301.

The spelling of 844866490 in words is "eight hundred forty-four million, eight hundred sixty-six thousand, four hundred ninety".