7886944 has 24 divisors (see below), whose sum is σ = 16722720. Its totient is φ = 3639936.

The previous prime is 7886939. The next prime is 7886947. The reversal of 7886944 is 4496887.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7886894 and 7886903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7886947) 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, 9064 + ... + 9895.

It is an arithmetic number, because the mean of its divisors is an integer number (696780).

Almost surely, 2^7886944 is an apocalyptic number.

It is an amenable number.

7886944 is an abundant number, since it is smaller than the sum of its proper divisors (8835776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7886944 is a wasteful number, since it uses less digits than its factorization.

7886944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18982 (or 18974 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 7886944 is about 2808.3703459480. The cubic root of 7886944 is about 199.0533934150.

The spelling of 7886944 in words is "seven million, eight hundred eighty-six thousand, nine hundred forty-four".