8423969 has 4 divisors (see below), whose sum is σ = 8431920. Its totient is φ = 8416020.

The previous prime is 8423953. The next prime is 8423999. The reversal of 8423969 is 9693248.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8423969 - 2⁴ = 8423953 is a prime.

It is a super-2 number, since 2×8423969² = 141926507425922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8423929) 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, 2087 + ... + 4604.

It is an arithmetic number, because the mean of its divisors is an integer number (2107980).

Almost surely, 2^8423969 is an apocalyptic number.

It is an amenable number.

8423969 is a deficient number, since it is larger than the sum of its proper divisors (7951).

8423969 is a wasteful number, since it uses less digits than its factorization.

8423969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7950.

The product of its digits is 93312, while the sum is 41.

The square root of 8423969 is about 2902.4074489982. The cubic root of 8423969 is about 203.4724369900.

The spelling of 8423969 in words is "eight million, four hundred twenty-three thousand, nine hundred sixty-nine".