8120489 has 8 divisors (see below), whose sum is σ = 8856960. Its totient is φ = 7400016.

The previous prime is 8120479. The next prime is 8120491. The reversal of 8120489 is 9840218.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-8120489 is a prime.

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 (8120459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2927 + ... + 4980.

It is an arithmetic number, because the mean of its divisors is an integer number (1107120).

Almost surely, 2^8120489 is an apocalyptic number.

It is an amenable number.

8120489 is a deficient number, since it is larger than the sum of its proper divisors (736471).

8120489 is a wasteful number, since it uses less digits than its factorization.

8120489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7999.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 8120489 is about 2849.6471711424. The cubic root of 8120489 is about 200.9990759262. Note that the first 3 decimals are identical.

The spelling of 8120489 in words is "eight million, one hundred twenty thousand, four hundred eighty-nine".