844742872 has 16 divisors (see below), whose sum is σ = 1585477800. Its totient is φ = 421948800.

The previous prime is 844742863. The next prime is 844742881. The reversal of 844742872 is 278247448.

It is an interprime number because it is at equal distance from previous prime (844742863) and next prime (844742881).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44254 + ... + 60397.

Almost surely, 2^844742872 is an apocalyptic number.

It is an amenable number.

844742872 is a deficient number, since it is larger than the sum of its proper divisors (740734928).

844742872 is a wasteful number, since it uses less digits than its factorization.

844742872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105666 (or 105662 counting only the distinct ones).

The product of its digits is 802816, while the sum is 46.

The square root of 844742872 is about 29064.4606349404. The cubic root of 844742872 is about 945.3112911181.

The spelling of 844742872 in words is "eight hundred forty-four million, seven hundred forty-two thousand, eight hundred seventy-two".