8836564009 has 27 divisors (see below), whose sum is σ = 11141591013. Its totient is φ = 6984798912.

The previous prime is 8836563893. The next prime is 8836564031. The reversal of 8836564009 is 9004656388.

It is a happy number.

The square root of 8836564009 is 94003.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 376243609 + 8460320400 = 19397^2 + 91980^2 .

It is not a de Polignac number, because 8836564009 - 2¹⁷ = 8836432937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (8836564049) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8553757 + ... + 8554789.

It is an arithmetic number, because the mean of its divisors is an integer number (412651519).

Almost surely, 2^8836564009 is an apocalyptic number.

8836564009 is the 94003-rd square number.

8836564009 is the 47002-nd centered octagonal number.

It is an amenable number.

8836564009 is a deficient number, since it is larger than the sum of its proper divisors (2305027004).

8836564009 is an equidigital number, since it uses as much as digits as its factorization.

8836564009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The cubic root of 8836564009 is about 2067.4156963598.

Multiplying 8836564009 by its sum of digits (49), we get a square (432991636441 = 658021²).

8836564009 divided by its sum of digits (49) gives a square (180338041 = 13429²).

The spelling of 8836564009 in words is "eight billion, eight hundred thirty-six million, five hundred sixty-four thousand, nine".