9764900809 has 4 divisors (see below), whose sum is σ = 9972664704. Its totient is φ = 9557136916.

The previous prime is 9764900777. The next prime is 9764900819. The reversal of 9764900809 is 9080094679.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9764900809 - 2⁵ = 9764900777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9764900819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103881877 + ... + 103881970.

It is an arithmetic number, because the mean of its divisors is an integer number (2493166176).

Almost surely, 2^9764900809 is an apocalyptic number.

It is an amenable number.

9764900809 is a deficient number, since it is larger than the sum of its proper divisors (207763895).

9764900809 is a wasteful number, since it uses less digits than its factorization.

9764900809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207763894.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 9764900809 is about 98817.5126634950. The cubic root of 9764900809 is about 2137.4170958076.

The spelling of 9764900809 in words is "nine billion, seven hundred sixty-four million, nine hundred thousand, eight hundred nine".