844629242 has 4 divisors (see below), whose sum is σ = 1266943866. Its totient is φ = 422314620.

The previous prime is 844629197. The next prime is 844629251. The reversal of 844629242 is 242926448.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 567440041 + 277189201 = 23821^2 + 16649^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 844629242.

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 as a sum of consecutive naturals, namely, 211157309 + ... + 211157312.

Almost surely, 2^844629242 is an apocalyptic number.

844629242 is a deficient number, since it is larger than the sum of its proper divisors (422314624).

844629242 is a wasteful number, since it uses less digits than its factorization.

844629242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422314623.

The product of its digits is 221184, while the sum is 41.

The square root of 844629242 is about 29062.5057763435. The cubic root of 844629242 is about 945.2689032538.

It can be divided in two parts, 84 and 4629242, that multiplied together give a triangular number (388856328 = T₂₇₈₈₇).

The spelling of 844629242 in words is "eight hundred forty-four million, six hundred twenty-nine thousand, two hundred forty-two".