844825870 has 16 divisors (see below), whose sum is σ = 1737927648. Its totient is φ = 289654560.

The previous prime is 844825853. The next prime is 844825889. The reversal of 844825870 is 78528448.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 844825870.

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 7 ways as a sum of consecutive naturals, for example, 6034401 + ... + 6034540.

It is an arithmetic number, because the mean of its divisors is an integer number (108620478).

Almost surely, 2^844825870 is an apocalyptic number.

844825870 is an abundant number, since it is smaller than the sum of its proper divisors (893101778).

844825870 is a wasteful number, since it uses less digits than its factorization.

844825870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12068955.

The product of its (nonzero) digits is 573440, while the sum is 46.

The square root of 844825870 is about 29065.8884261259. Note that the first 3 decimals coincide. The cubic root of 844825870 is about 945.3422497998.

The spelling of 844825870 in words is "eight hundred forty-four million, eight hundred twenty-five thousand, eight hundred seventy".