7999944 has 16 divisors (see below), whose sum is σ = 19999920. Its totient is φ = 2666640.

The previous prime is 7999921. The next prime is 7999963. The reversal of 7999944 is 4499997.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166642 + ... + 166689.

It is an arithmetic number, because the mean of its divisors is an integer number (1249995).

Almost surely, 2^7999944 is an apocalyptic number.

It is an amenable number.

7999944 is an abundant number, since it is smaller than the sum of its proper divisors (11999976).

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

7999944 is a wasteful number, since it uses less digits than its factorization.

7999944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333340 (or 333336 counting only the distinct ones).

The product of its digits is 734832, while the sum is 51.

The square root of 7999944 is about 2828.4172252339. The cubic root of 7999944 is about 199.9995333322. Note that the first 3 decimals are identical.

The spelling of 7999944 in words is "seven million, nine hundred ninety-nine thousand, nine hundred forty-four".