7964859505 has 4 divisors (see below), whose sum is σ = 9557831412. Its totient is φ = 6371887600.

The previous prime is 7964859491. The next prime is 7964859509. The reversal of 7964859505 is 5059584697.

7964859505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5523313761 + 2441545744 = 74319^2 + 49412^2 .

It is not a de Polignac number, because 7964859505 - 2⁷ = 7964859377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7964859505.

It is not an unprimeable number, because it can be changed into a prime (7964859509) 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, 796485946 + ... + 796485955.

It is an arithmetic number, because the mean of its divisors is an integer number (2389457853).

Almost surely, 2^7964859505 is an apocalyptic number.

It is an amenable number.

7964859505 is a deficient number, since it is larger than the sum of its proper divisors (1592971907).

7964859505 is a wasteful number, since it uses less digits than its factorization.

7964859505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592971906.

The product of its (nonzero) digits is 13608000, while the sum is 58.

The square root of 7964859505 is about 89246.0615657632. The cubic root of 7964859505 is about 1997.0673272338.

The spelling of 7964859505 in words is "seven billion, nine hundred sixty-four million, eight hundred fifty-nine thousand, five hundred five".