7984379969 has 2 divisors, whose sum is σ = 7984379970. Its totient is φ = 7984379968.

The previous prime is 7984379959. The next prime is 7984379981. The reversal of 7984379969 is 9699734897.

7984379969 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7936493569 + 47886400 = 89087^2 + 6920^2 .

It is a cyclic number.

It is not a de Polignac number, because 7984379969 - 2³² = 3689412673 is a prime.

It is a super-2 number, since 2×7984379969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7984379959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3992189984 + 3992189985.

It is an arithmetic number, because the mean of its divisors is an integer number (3992189985).

Almost surely, 2^7984379969 is an apocalyptic number.

It is an amenable number.

7984379969 is a deficient number, since it is larger than the sum of its proper divisors (1).

7984379969 is an equidigital number, since it uses as much as digits as its factorization.

7984379969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185177664, while the sum is 71.

The square root of 7984379969 is about 89355.3578080240. The cubic root of 7984379969 is about 1998.6974826584.

The spelling of 7984379969 in words is "seven billion, nine hundred eighty-four million, three hundred seventy-nine thousand, nine hundred sixty-nine".