609005849 has 2 divisors, whose sum is σ = 609005850. Its totient is φ = 609005848.

The previous prime is 609005791. The next prime is 609005851. The reversal of 609005849 is 948500906.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 529920400 + 79085449 = 23020^2 + 8893^2 .

It is a cyclic number.

It is not a de Polignac number, because 609005849 - 2¹² = 609001753 is a prime.

Together with 609005851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (609005899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304502924 + 304502925.

It is an arithmetic number, because the mean of its divisors is an integer number (304502925).

Almost surely, 2^609005849 is an apocalyptic number.

It is an amenable number.

609005849 is a deficient number, since it is larger than the sum of its proper divisors (1).

609005849 is an equidigital number, since it uses as much as digits as its factorization.

609005849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 609005849 is about 24678.0438649420. The cubic root of 609005849 is about 847.6316303988.

The spelling of 609005849 in words is "six hundred nine million, five thousand, eight hundred forty-nine".