7791079 has 4 divisors (see below), whose sum is σ = 7798384. Its totient is φ = 7783776.

The previous prime is 7791073. The next prime is 7791097. The reversal of 7791079 is 9701977.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9701977 = 31 ⋅312967.

It is a cyclic number.

It is not a de Polignac number, because 7791079 - 2⁹ = 7790567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7791073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1707 + ... + 4300.

It is an arithmetic number, because the mean of its divisors is an integer number (1949596).

Almost surely, 2^7791079 is an apocalyptic number.

7791079 is a deficient number, since it is larger than the sum of its proper divisors (7305).

7791079 is a wasteful number, since it uses less digits than its factorization.

7791079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7304.

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

The square root of 7791079 is about 2791.2504366323. The cubic root of 7791079 is about 198.2436123307.

The spelling of 7791079 in words is "seven million, seven hundred ninety-one thousand, seventy-nine".