7209379117 has 4 divisors (see below), whose sum is σ = 7221537180. Its totient is φ = 7197221056.

The previous prime is 7209379069. The next prime is 7209379139. The reversal of 7209379117 is 7119739027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7119739027 = 643 ⋅11072689.

It can be written as a sum of positive squares in 2 ways, for example, as 5614654761 + 1594724356 = 74931^2 + 39934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7209379117 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 (7209379517) 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, 6078142 + ... + 6079327.

It is an arithmetic number, because the mean of its divisors is an integer number (1805384295).

Almost surely, 2^7209379117 is an apocalyptic number.

It is an amenable number.

7209379117 is a deficient number, since it is larger than the sum of its proper divisors (12158063).

7209379117 is a wasteful number, since it uses less digits than its factorization.

7209379117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12158062.

The product of its (nonzero) digits is 166698, while the sum is 46.

The square root of 7209379117 is about 84908.0627325815. The cubic root of 7209379117 is about 1931.8168718692.

The spelling of 7209379117 in words is "seven billion, two hundred nine million, three hundred seventy-nine thousand, one hundred seventeen".