609488839 has 2 divisors, whose sum is σ = 609488840. Its totient is φ = 609488838.

The previous prime is 609488833. The next prime is 609488849. The reversal of 609488839 is 938884906.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 609488839 - 2⁵ = 609488807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 609488839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (609488833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304744419 + 304744420.

It is an arithmetic number, because the mean of its divisors is an integer number (304744420).

Almost surely, 2^609488839 is an apocalyptic number.

609488839 is a deficient number, since it is larger than the sum of its proper divisors (1).

609488839 is an equidigital number, since it uses as much as digits as its factorization.

609488839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The square root of 609488839 is about 24687.8277497231. The cubic root of 609488839 is about 847.8556509186.

The spelling of 609488839 in words is "six hundred nine million, four hundred eighty-eight thousand, eight hundred thirty-nine".