4528009 has 2 divisors, whose sum is σ = 4528010. Its totient is φ = 4528008.

The previous prime is 4527979. The next prime is 4528019. The reversal of 4528009 is 9008254.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2732409 + 1795600 = 1653^2 + 1340^2 .

It is a cyclic number.

It is not a de Polignac number, because 4528009 - 2¹³ = 4519817 is a prime.

It is not a weakly prime, because it can be changed into another prime (4528019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2264004 + 2264005.

It is an arithmetic number, because the mean of its divisors is an integer number (2264005).

Almost surely, 2^4528009 is an apocalyptic number.

It is an amenable number.

4528009 is a deficient number, since it is larger than the sum of its proper divisors (1).

4528009 is an equidigital number, since it uses as much as digits as its factorization.

4528009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 4528009 is about 2127.9118872735. The cubic root of 4528009 is about 165.4381863759.

The spelling of 4528009 in words is "four million, five hundred twenty-eight thousand, nine".