7979782 has 4 divisors (see below), whose sum is σ = 11969676. Its totient is φ = 3989890.

The previous prime is 7979779. The next prime is 7979813. The reversal of 7979782 is 2879797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2879797 = 647 ⋅4451.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994944 + ... + 1994947.

It is an arithmetic number, because the mean of its divisors is an integer number (2992419).

Almost surely, 2^7979782 is an apocalyptic number.

7979782 is a deficient number, since it is larger than the sum of its proper divisors (3989894).

7979782 is a wasteful number, since it uses less digits than its factorization.

7979782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989893.

The product of its digits is 444528, while the sum is 49.

The square root of 7979782 is about 2824.8507925198. The cubic root of 7979782 is about 199.8313745339.

The spelling of 7979782 in words is "seven million, nine hundred seventy-nine thousand, seven hundred eighty-two".