8625989 has 4 divisors (see below), whose sum is σ = 9001056. Its totient is φ = 8250924.

The previous prime is 8625983. The next prime is 8625997. The reversal of 8625989 is 9895268.

8625989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8625989 - 2⁴ = 8625973 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 (8625983) 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, 187499 + ... + 187544.

It is an arithmetic number, because the mean of its divisors is an integer number (2250264).

Almost surely, 2^8625989 is an apocalyptic number.

It is an amenable number.

8625989 is a deficient number, since it is larger than the sum of its proper divisors (375067).

8625989 is a wasteful number, since it uses less digits than its factorization.

8625989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375066.

The product of its digits is 311040, while the sum is 47.

The square root of 8625989 is about 2937.0034048329. The cubic root of 8625989 is about 205.0861347338.

The spelling of 8625989 in words is "eight million, six hundred twenty-five thousand, nine hundred eighty-nine".