844338642 has 16 divisors (see below), whose sum is σ = 1929916992. Its totient is φ = 241239600.

The previous prime is 844338581. The next prime is 844338653. The reversal of 844338642 is 246833448.

844338642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 20103301 = 844338642 / (8 + 4 + 4 + 3 + 3 + 8 + 6 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 844338594 and 844338603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10051609 + ... + 10051692.

It is an arithmetic number, because the mean of its divisors is an integer number (120619812).

Almost surely, 2^844338642 is an apocalyptic number.

844338642 is an abundant number, since it is smaller than the sum of its proper divisors (1085578350).

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

844338642 is a wasteful number, since it uses less digits than its factorization.

844338642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20103313.

The product of its digits is 442368, while the sum is 42.

The square root of 844338642 is about 29057.5057773375. The cubic root of 844338642 is about 945.1604822492.

The spelling of 844338642 in words is "eight hundred forty-four million, three hundred thirty-eight thousand, six hundred forty-two".