8573989 has 4 divisors (see below), whose sum is σ = 8611660. Its totient is φ = 8536320.

The previous prime is 8573987. The next prime is 8574019. The reversal of 8573989 is 9893758.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6543364 + 2030625 = 2558^2 + 1425^2 .

It is a cyclic number.

It is not a de Polignac number, because 8573989 - 2¹ = 8573987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8573987) 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, 18492 + ... + 18949.

It is an arithmetic number, because the mean of its divisors is an integer number (2152915).

Almost surely, 2^8573989 is an apocalyptic number.

It is an amenable number.

8573989 is a deficient number, since it is larger than the sum of its proper divisors (37671).

8573989 is a wasteful number, since it uses less digits than its factorization.

8573989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37670.

The product of its digits is 544320, while the sum is 49.

The square root of 8573989 is about 2928.1374626202. The cubic root of 8573989 is about 204.6731973263.

The spelling of 8573989 in words is "eight million, five hundred seventy-three thousand, nine hundred eighty-nine".