7991036 has 12 divisors (see below), whose sum is σ = 14012880. Its totient is φ = 3987360.

The previous prime is 7991033. The next prime is 7991047. The reversal of 7991036 is 6301997.

It is a junction number, because it is equal to n+sod(n) for n = 7990987 and 7991005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7991033) 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, 521 + ... + 4031.

It is an arithmetic number, because the mean of its divisors is an integer number (1167740).

Almost surely, 2^7991036 is an apocalyptic number.

It is an amenable number.

7991036 is a deficient number, since it is larger than the sum of its proper divisors (6021844).

7991036 is a wasteful number, since it uses less digits than its factorization.

7991036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084 (or 4082 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 7991036 is about 2826.8420543072. The cubic root of 7991036 is about 199.9252720822.

The spelling of 7991036 in words is "seven million, nine hundred ninety-one thousand, thirty-six".