7990841 has 4 divisors (see below), whose sum is σ = 7996800. Its totient is φ = 7984884.

The previous prime is 7990823. The next prime is 7990847. The reversal of 7990841 is 1480997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1480997 = 7 ⋅211571.

It is a cyclic number.

It is not a de Polignac number, because 7990841 - 2¹⁸ = 7728697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7990795 and 7990804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7990847) 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, 80 + ... + 3998.

It is an arithmetic number, because the mean of its divisors is an integer number (1999200).

Almost surely, 2^7990841 is an apocalyptic number.

It is an amenable number.

7990841 is a deficient number, since it is larger than the sum of its proper divisors (5959).

7990841 is a wasteful number, since it uses less digits than its factorization.

7990841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5958.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 7990841 is about 2826.8075633124. The cubic root of 7990841 is about 199.9236458539.

The spelling of 7990841 in words is "seven million, nine hundred ninety thousand, eight hundred forty-one".