7993844 has 12 divisors (see below), whose sum is σ = 14023044. Its totient is φ = 3987264.

The previous prime is 7993841. The next prime is 7993849. The reversal of 7993844 is 4483997.

It can be written as a sum of positive squares in 2 ways, for example, as 5856400 + 2137444 = 2420^2 + 1462^2 .

It is a d-powerful number, because it can be written as 7⁸ + 9 + 9² + 3⁶ + 8⁷ + 4⁸ + 4⁸ .

It is a junction number, because it is equal to n+sod(n) for n = 7993795 and 7993804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7993841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359 + ... + 4014.

It is an arithmetic number, because the mean of its divisors is an integer number (1168587).

Almost surely, 2^7993844 is an apocalyptic number.

It is an amenable number.

7993844 is a deficient number, since it is larger than the sum of its proper divisors (6029200).

7993844 is a wasteful number, since it uses less digits than its factorization.

7993844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4834 (or 4832 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 7993844 is about 2827.3386779797. The cubic root of 7993844 is about 199.9486868359.

The spelling of 7993844 in words is "seven million, nine hundred ninety-three thousand, eight hundred forty-four".