844864838 has 16 divisors (see below), whose sum is σ = 1297794960. Its totient is φ = 412347936.

The previous prime is 844864763. The next prime is 844864871. The reversal of 844864838 is 838468448.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a self number, because there is not a number n which added to its sum of digits gives 844864838.

It is a congruent number.

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, 653 + ... + 41111.

It is an arithmetic number, because the mean of its divisors is an integer number (81112185).

Almost surely, 2^844864838 is an apocalyptic number.

844864838 is a deficient number, since it is larger than the sum of its proper divisors (452930122).

844864838 is a wasteful number, since it uses less digits than its factorization.

844864838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40711.

The product of its digits is 4718592, while the sum is 53.

The square root of 844864838 is about 29066.5587574450. The cubic root of 844864838 is about 945.3567843651.

The spelling of 844864838 in words is "eight hundred forty-four million, eight hundred sixty-four thousand, eight hundred thirty-eight".