8264709389 has 4 divisors (see below), whose sum is σ = 8420647356. Its totient is φ = 8108771424.

The previous prime is 8264709317. The next prime is 8264709413. The reversal of 8264709389 is 9839074628.

It is a happy number.

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 3261552100 + 5003157289 = 57110^2 + 70733^2 .

It is a cyclic number.

It is not a de Polignac number, because 8264709389 - 2²⁰ = 8263660813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8264706389) 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, 77968904 + ... + 77969009.

It is an arithmetic number, because the mean of its divisors is an integer number (2105161839).

Almost surely, 2^8264709389 is an apocalyptic number.

It is an amenable number.

8264709389 is a deficient number, since it is larger than the sum of its proper divisors (155937967).

8264709389 is a wasteful number, since it uses less digits than its factorization.

8264709389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155937966.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The square root of 8264709389 is about 90910.4470839298. The cubic root of 8264709389 is about 2021.8201896580.

The spelling of 8264709389 in words is "eight billion, two hundred sixty-four million, seven hundred nine thousand, three hundred eighty-nine".