7979005 has 4 divisors (see below), whose sum is σ = 9574812. Its totient is φ = 6383200.

The previous prime is 7978981. The next prime is 7979009. The reversal of 7979005 is 5009797.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3644281 + 4334724 = 1909^2 + 2082^2 .

It is not a de Polignac number, because 7979005 - 2⁷ = 7978877 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 (7979009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797896 + ... + 797905.

It is an arithmetic number, because the mean of its divisors is an integer number (2393703).

Almost surely, 2^7979005 is an apocalyptic number.

It is an amenable number.

7979005 is a deficient number, since it is larger than the sum of its proper divisors (1595807).

7979005 is a wasteful number, since it uses less digits than its factorization.

7979005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595806.

The product of its (nonzero) digits is 19845, while the sum is 37.

The square root of 7979005 is about 2824.7132597841. The cubic root of 7979005 is about 199.8248883910.

The spelling of 7979005 in words is "seven million, nine hundred seventy-nine thousand, five".