844425249 has 8 divisors (see below), whose sum is σ = 1132808352. Its totient is φ = 559496160.

The previous prime is 844425247. The next prime is 844425259. The reversal of 844425249 is 942524448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 844425249 - 2¹ = 844425247 is a prime.

It is a super-2 number, since 2×844425249² = 1426108002297424002, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 844425249.

It is not an unprimeable number, because it can be changed into a prime (844425247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862932 + ... + 863909.

It is an arithmetic number, because the mean of its divisors is an integer number (141601044).

Almost surely, 2^844425249 is an apocalyptic number.

It is an amenable number.

844425249 is a deficient number, since it is larger than the sum of its proper divisors (288383103).

844425249 is a wasteful number, since it uses less digits than its factorization.

844425249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727007.

The product of its digits is 368640, while the sum is 42.

The square root of 844425249 is about 29058.9960081211. The cubic root of 844425249 is about 945.1927973698.

The spelling of 844425249 in words is "eight hundred forty-four million, four hundred twenty-five thousand, two hundred forty-nine".