7944842 has 8 divisors (see below), whose sum is σ = 11933796. Its totient is φ = 3966912.

The previous prime is 7944841. The next prime is 7944851. The reversal of 7944842 is 2484497.

It can be written as a sum of positive squares in 2 ways, for example, as 6205081 + 1739761 = 2491^2 + 1319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 7944796 and 7944805.

It is not an unprimeable number, because it can be changed into a prime (7944841) 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, 623 + ... + 4034.

Almost surely, 2^7944842 is an apocalyptic number.

7944842 is a deficient number, since it is larger than the sum of its proper divisors (3988954).

7944842 is a wasteful number, since it uses less digits than its factorization.

7944842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5512.

The product of its digits is 64512, while the sum is 38.

The square root of 7944842 is about 2818.6596105241. The cubic root of 7944842 is about 199.5392895443.

The spelling of 7944842 in words is "seven million, nine hundred forty-four thousand, eight hundred forty-two".