609989449 has 4 divisors (see below), whose sum is σ = 629666560. Its totient is φ = 590312340.

The previous prime is 609989441. The next prime is 609989459. The reversal of 609989449 is 944989906.

609989449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 609989449 - 2³ = 609989441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 609989393 and 609989402.

It is not an unprimeable number, because it can be changed into a prime (609989441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9838509 + ... + 9838570.

It is an arithmetic number, because the mean of its divisors is an integer number (157416640).

Almost surely, 2^609989449 is an apocalyptic number.

It is an amenable number.

609989449 is a deficient number, since it is larger than the sum of its proper divisors (19677111).

609989449 is a wasteful number, since it uses less digits than its factorization.

609989449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19677110.

The product of its (nonzero) digits is 5038848, while the sum is 58.

The square root of 609989449 is about 24697.9644707818. The cubic root of 609989449 is about 848.0877190801.

The spelling of 609989449 in words is "six hundred nine million, nine hundred eighty-nine thousand, four hundred forty-nine".