509487089 has 2 divisors, whose sum is σ = 509487090. Its totient is φ = 509487088.

The previous prime is 509487073. The next prime is 509487101. The reversal of 509487089 is 980784905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381616225 + 127870864 = 19535^2 + 11308^2 .

It is a cyclic number.

It is not a de Polignac number, because 509487089 - 2⁴ = 509487073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (509487029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254743544 + 254743545.

It is an arithmetic number, because the mean of its divisors is an integer number (254743545).

Almost surely, 2^509487089 is an apocalyptic number.

It is an amenable number.

509487089 is a deficient number, since it is larger than the sum of its proper divisors (1).

509487089 is an equidigital number, since it uses as much as digits as its factorization.

509487089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 509487089 is about 22571.8206842071. The cubic root of 509487089 is about 798.6890451075.

The spelling of 509487089 in words is "five hundred nine million, four hundred eighty-seven thousand, eighty-nine".