9643969 has 4 divisors (see below), whose sum is σ = 10063296. Its totient is φ = 9224644.

The previous prime is 9643961. The next prime is 9643973. The reversal of 9643969 is 9693469.

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 9643969 - 2³ = 9643961 is a prime.

It is a super-2 number, since 2×9643969² = 186012276145922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9643961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209629 + ... + 209674.

It is an arithmetic number, because the mean of its divisors is an integer number (2515824).

Almost surely, 2^9643969 is an apocalyptic number.

It is an amenable number.

9643969 is a deficient number, since it is larger than the sum of its proper divisors (419327).

9643969 is a wasteful number, since it uses less digits than its factorization.

9643969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419326.

The product of its digits is 314928, while the sum is 46.

The square root of 9643969 is about 3105.4740378886. The cubic root of 9643969 is about 212.8556921833.

The spelling of 9643969 in words is "nine million, six hundred forty-three thousand, nine hundred sixty-nine".