9634664369 has 4 divisors (see below), whose sum is σ = 10510542960. Its totient is φ = 8758785780.

The previous prime is 9634664359. The next prime is 9634664399.

It is a happy number.

9634664369 is nontrivially palindromic in base 10.

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 9634664369 - 2¹⁶ = 9634598833 is a prime.

It is a super-2 number, since 2×9634664369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9634664309) 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, 437939279 + ... + 437939300.

It is an arithmetic number, because the mean of its divisors is an integer number (2627635740).

Almost surely, 2^9634664369 is an apocalyptic number.

It is an amenable number.

9634664369 is a deficient number, since it is larger than the sum of its proper divisors (875878591).

9634664369 is a wasteful number, since it uses less digits than its factorization.

9634664369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875878590.

The product of its digits is 15116544, while the sum is 56.

The square root of 9634664369 is about 98156.3261792127. The cubic root of 9634664369 is about 2127.8721481106.

The spelling of 9634664369 in words is "nine billion, six hundred thirty-four million, six hundred sixty-four thousand, three hundred sixty-nine".