921241844 has 12 divisors (see below), whose sum is σ = 1620276000. Its totient is φ = 458305848.

The previous prime is 921241843. The next prime is 921241889. The reversal of 921241844 is 448142129.

It is a happy number.

921241844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921241843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577874 + ... + 579465.

It is an arithmetic number, because the mean of its divisors is an integer number (135023000).

Almost surely, 2^921241844 is an apocalyptic number.

It is an amenable number.

921241844 is a deficient number, since it is larger than the sum of its proper divisors (699034156).

921241844 is a wasteful number, since it uses less digits than its factorization.

921241844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157542 (or 1157540 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 921241844 is about 30351.9660648202. The cubic root of 921241844 is about 973.0262394660.

The spelling of 921241844 in words is "nine hundred twenty-one million, two hundred forty-one thousand, eight hundred forty-four".