4517989 has 8 divisors (see below), whose sum is σ = 5197568. Its totient is φ = 3846960.

The previous prime is 4517987. The next prime is 4517993. The reversal of 4517989 is 9897154.

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

It is a cyclic number.

It is not a de Polignac number, because 4517989 - 2¹ = 4517987 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 (4517987) 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, 957 + ... + 3154.

It is an arithmetic number, because the mean of its divisors is an integer number (649696).

Almost surely, 2^4517989 is an apocalyptic number.

It is an amenable number.

4517989 is a deficient number, since it is larger than the sum of its proper divisors (679579).

4517989 is a wasteful number, since it uses less digits than its factorization.

4517989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275.

The product of its digits is 90720, while the sum is 43.

The square root of 4517989 is about 2125.5561625137. The cubic root of 4517989 is about 165.3160639083.

The spelling of 4517989 in words is "four million, five hundred seventeen thousand, nine hundred eighty-nine".