7947797020 has 12 divisors (see below), whose sum is σ = 16690373784. Its totient is φ = 3179118800.

The previous prime is 7947797003. The next prime is 7947797047. The reversal of 7947797020 is 207977497.

It is a super-2 number, since 2×7947797020² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198694906 + ... + 198694945.

It is an arithmetic number, because the mean of its divisors is an integer number (1390864482).

Almost surely, 2^7947797020 is an apocalyptic number.

It is an amenable number.

7947797020 is an abundant number, since it is smaller than the sum of its proper divisors (8742576764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7947797020 is a wasteful number, since it uses less digits than its factorization.

7947797020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397389860 (or 397389858 counting only the distinct ones).

The product of its (nonzero) digits is 1555848, while the sum is 52.

The square root of 7947797020 is about 89150.4179463002. The cubic root of 7947797020 is about 1995.6402548835.

The spelling of 7947797020 in words is "seven billion, nine hundred forty-seven million, seven hundred ninety-seven thousand, twenty".