8235729745 has 4 divisors (see below), whose sum is σ = 9882875700. Its totient is φ = 6588583792.

The previous prime is 8235729739. The next prime is 8235729751. The reversal of 8235729745 is 5479275328.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (8235729739) and next prime (8235729751).

It can be written as a sum of positive squares in 2 ways, for example, as 1428159681 + 6807570064 = 37791^2 + 82508^2 .

It is a cyclic number.

It is not a de Polignac number, because 8235729745 - 2⁹ = 8235729233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8235729692 and 8235729701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823572970 + ... + 823572979.

It is an arithmetic number, because the mean of its divisors is an integer number (2470718925).

Almost surely, 2^8235729745 is an apocalyptic number.

It is an amenable number.

8235729745 is a deficient number, since it is larger than the sum of its proper divisors (1647145955).

8235729745 is a wasteful number, since it uses less digits than its factorization.

8235729745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647145954.

The product of its digits is 4233600, while the sum is 52.

The square root of 8235729745 is about 90750.9214553770. The cubic root of 8235729745 is about 2019.4542970088.

The spelling of 8235729745 in words is "eight billion, two hundred thirty-five million, seven hundred twenty-nine thousand, seven hundred forty-five".