7949785859 has 2 divisors, whose sum is σ = 7949785860. Its totient is φ = 7949785858.

The previous prime is 7949785829. The next prime is 7949785873. The reversal of 7949785859 is 9585879497.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7949785859 - 2⁸ = 7949785603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7949785792 and 7949785801.

It is not a weakly prime, because it can be changed into another prime (7949785819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3974892929 + 3974892930.

It is an arithmetic number, because the mean of its divisors is an integer number (3974892930).

Almost surely, 2^7949785859 is an apocalyptic number.

7949785859 is a deficient number, since it is larger than the sum of its proper divisors (1).

7949785859 is an equidigital number, since it uses as much as digits as its factorization.

7949785859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 228614400, while the sum is 71.

The square root of 7949785859 is about 89161.5716494500. The cubic root of 7949785859 is about 1995.8067025226.

The spelling of 7949785859 in words is "seven billion, nine hundred forty-nine million, seven hundred eighty-five thousand, eight hundred fifty-nine".