7789947459 has 16 divisors (see below), whose sum is σ = 11884274688. Its totient is φ = 4446194112.

The previous prime is 7789947439. The next prime is 7789947521. The reversal of 7789947459 is 9547499877.

It is not a de Polignac number, because 7789947459 - 2²⁰ = 7788898883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7789947393 and 7789947402.

It is not an unprimeable number, because it can be changed into a prime (7789947409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198427 + ... + 234420.

It is an arithmetic number, because the mean of its divisors is an integer number (742767168).

Almost surely, 2^7789947459 is an apocalyptic number.

7789947459 is a deficient number, since it is larger than the sum of its proper divisors (4094327229).

7789947459 is a wasteful number, since it uses less digits than its factorization.

7789947459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433714.

The product of its digits is 160030080, while the sum is 69.

The square root of 7789947459 is about 88260.6790082651. The cubic root of 7789947459 is about 1982.3401453152.

The spelling of 7789947459 in words is "seven billion, seven hundred eighty-nine million, nine hundred forty-seven thousand, four hundred fifty-nine".