7971079 has 4 divisors (see below), whose sum is σ = 8439984. Its totient is φ = 7502176.

The previous prime is 7971031. The next prime is 7971091. The reversal of 7971079 is 9701797.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7971079 - 2⁷ = 7970951 is a prime.

It is a Duffinian number.

7971079 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971679) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 234427 + ... + 234460.

It is an arithmetic number, because the mean of its divisors is an integer number (2109996).

Almost surely, 2^7971079 is an apocalyptic number.

7971079 is a deficient number, since it is larger than the sum of its proper divisors (468905).

7971079 is a wasteful number, since it uses less digits than its factorization.

7971079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468904.

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

The square root of 7971079 is about 2823.3099369357. The cubic root of 7971079 is about 199.7587006569.

The spelling of 7971079 in words is "seven million, nine hundred seventy-one thousand, seventy-nine".