7990771 has 4 divisors (see below), whose sum is σ = 8092000. Its totient is φ = 7889544.

The previous prime is 7990751. The next prime is 7990789. The reversal of 7990771 is 1770997.

It is a happy number.

7990771 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7990771 - 2⁷ = 7990643 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7990711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50496 + ... + 50653.

It is an arithmetic number, because the mean of its divisors is an integer number (2023000).

Almost surely, 2^7990771 is an apocalyptic number.

7990771 is a deficient number, since it is larger than the sum of its proper divisors (101229).

7990771 is a wasteful number, since it uses less digits than its factorization.

7990771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101228.

The product of its (nonzero) digits is 27783, while the sum is 40.

The square root of 7990771 is about 2826.7951818269. The cubic root of 7990771 is about 199.9230620732.

The spelling of 7990771 in words is "seven million, nine hundred ninety thousand, seven hundred seventy-one".