8641969 has 8 divisors (see below), whose sum is σ = 9955328. Its totient is φ = 7348320.

The previous prime is 8641957. The next prime is 8641987. The reversal of 8641969 is 9691468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8641969 - 2¹¹ = 8639921 is a prime.

It is a super-2 number, since 2×8641969² = 149367256393922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8641909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3972 + ... + 5749.

It is an arithmetic number, because the mean of its divisors is an integer number (1244416).

Almost surely, 2^8641969 is an apocalyptic number.

It is an amenable number.

8641969 is a deficient number, since it is larger than the sum of its proper divisors (1313359).

8641969 is a wasteful number, since it uses less digits than its factorization.

8641969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9855.

The product of its digits is 93312, while the sum is 43.

The square root of 8641969 is about 2939.7226059613. The cubic root of 8641969 is about 205.2127001146.

The spelling of 8641969 in words is "eight million, six hundred forty-one thousand, nine hundred sixty-nine".