844354609 has 8 divisors (see below), whose sum is σ = 965931840. Its totient is φ = 723016176.

The previous prime is 844354591. The next prime is 844354631. The reversal of 844354609 is 906453448.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 844354609 - 2²⁷ = 710136881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844354669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52054 + ... + 66319.

It is an arithmetic number, because the mean of its divisors is an integer number (120741480).

Almost surely, 2^844354609 is an apocalyptic number.

It is an amenable number.

844354609 is a deficient number, since it is larger than the sum of its proper divisors (121577231).

844354609 is a wasteful number, since it uses less digits than its factorization.

844354609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119399.

The product of its (nonzero) digits is 414720, while the sum is 43.

The square root of 844354609 is about 29057.7805243277. The cubic root of 844354609 is about 945.1664400808.

The spelling of 844354609 in words is "eight hundred forty-four million, three hundred fifty-four thousand, six hundred nine".