7997944 has 16 divisors (see below), whose sum is σ = 15028920. Its totient is φ = 3990240.

The previous prime is 7997933. The next prime is 7997947. The reversal of 7997944 is 4497997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7997947) 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, 4459 + ... + 5989.

Almost surely, 2^7997944 is an apocalyptic number.

It is an amenable number.

7997944 is a deficient number, since it is larger than the sum of its proper divisors (7030976).

7997944 is a wasteful number, since it uses less digits than its factorization.

7997944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2186 counting only the distinct ones).

The product of its digits is 571536, while the sum is 49.

The square root of 7997944 is about 2828.0636485058. The cubic root of 7997944 is about 199.9828651987.

The spelling of 7997944 in words is "seven million, nine hundred ninety-seven thousand, nine hundred forty-four".