4509000 has 128 divisors (see below), whose sum is σ = 15724800. Its totient is φ = 1195200.

The previous prime is 4508983. The next prime is 4509013. The reversal of 4509000 is 9054.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26917 + ... + 27083.

It is an arithmetic number, because the mean of its divisors is an integer number (122850).

Almost surely, 2^4509000 is an apocalyptic number.

4509000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4509000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7862400).

4509000 is an abundant number, since it is smaller than the sum of its proper divisors (11215800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4509000 is a wasteful number, since it uses less digits than its factorization.

4509000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 4509000 is about 2123.4406043024. The cubic root of 4509000 is about 165.2063533916.

The spelling of 4509000 in words is "four million, five hundred nine thousand".