7793986 has 4 divisors (see below), whose sum is σ = 11690982. Its totient is φ = 3896992.

The previous prime is 7793983. The next prime is 7793999. The reversal of 7793986 is 6893977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6893977 = 137 ⋅50321.

It can be written as a sum of positive squares in only one way, i.e., 7733961 + 60025 = 2781^2 + 245^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7793983) by changing a digit.

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, 1948495 + ... + 1948498.

Almost surely, 2^7793986 is an apocalyptic number.

7793986 is a deficient number, since it is larger than the sum of its proper divisors (3896996).

7793986 is a wasteful number, since it uses less digits than its factorization.

7793986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3896995.

The product of its digits is 571536, while the sum is 49.

The square root of 7793986 is about 2791.7711224239. The cubic root of 7793986 is about 198.2682654210.

Subtracting from 7793986 its reverse (6893977), we obtain a palindrome (900009).

The spelling of 7793986 in words is "seven million, seven hundred ninety-three thousand, nine hundred eighty-six".