609244409 has 12 divisors (see below), whose sum is σ = 624963300. Its totient is φ = 593910048.

The previous prime is 609244387. The next prime is 609244417. The reversal of 609244409 is 904442906.

It can be written as a sum of positive squares in 2 ways, for example, as 110838784 + 498405625 = 10528^2 + 22325^2 .

It is not a de Polignac number, because 609244409 - 2²⁴ = 592467193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609244459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 858947 + ... + 859655.

It is an arithmetic number, because the mean of its divisors is an integer number (52080275).

Almost surely, 2^609244409 is an apocalyptic number.

It is an amenable number.

609244409 is a deficient number, since it is larger than the sum of its proper divisors (15718891).

609244409 is an equidigital number, since it uses as much as digits as its factorization.

609244409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 609244409 is about 24682.8768380025. The cubic root of 609244409 is about 847.7422941439.

The spelling of 609244409 in words is "six hundred nine million, two hundred forty-four thousand, four hundred nine".