7991882 has 4 divisors (see below), whose sum is σ = 11987826. Its totient is φ = 3995940.

The previous prime is 7991869. The next prime is 7991891. The reversal of 7991882 is 2881997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2881997 = 563 ⋅5119.

It can be written as a sum of positive squares in only one way, i.e., 7284601 + 707281 = 2699^2 + 841^2 .

It is a super-3 number, since 3×7991882³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997969 + ... + 1997972.

Almost surely, 2^7991882 is an apocalyptic number.

7991882 is a deficient number, since it is larger than the sum of its proper divisors (3995944).

7991882 is a wasteful number, since it uses less digits than its factorization.

7991882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995943.

The product of its digits is 72576, while the sum is 44.

The square root of 7991882 is about 2826.9916872888. The cubic root of 7991882 is about 199.9323271045.

The spelling of 7991882 in words is "seven million, nine hundred ninety-one thousand, eight hundred eighty-two".