8466989 has 4 divisors (see below), whose sum is σ = 8912640. Its totient is φ = 8021340.

The previous prime is 8466979. The next prime is 8467007. The reversal of 8466989 is 9896648.

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 8466989 - 2¹² = 8462893 is a prime.

It is a super-2 number, since 2×8466989² = 143379805452242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8466919) 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, 222797 + ... + 222834.

It is an arithmetic number, because the mean of its divisors is an integer number (2228160).

Almost surely, 2^8466989 is an apocalyptic number.

It is an amenable number.

8466989 is a deficient number, since it is larger than the sum of its proper divisors (445651).

8466989 is a wasteful number, since it uses less digits than its factorization.

8466989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445650.

The product of its digits is 746496, while the sum is 50.

The square root of 8466989 is about 2909.8091002676. The cubic root of 8466989 is about 203.8182172120.

The spelling of 8466989 in words is "eight million, four hundred sixty-six thousand, nine hundred eighty-nine".