6909644448 has 288 divisors, whose sum is σ = 23154768000. Its totient is φ = 1953552384.

The previous prime is 6909644381. The next prime is 6909644461. The reversal of 6909644448 is 8444469096.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is a junction number, because it is equal to n+sod(n) for n = 6909644394 and 6909644403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11162283 + ... + 11162901.

It is an arithmetic number, because the mean of its divisors is an integer number (80398500).

Almost surely, 2^6909644448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6909644448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11577384000).

6909644448 is an abundant number, since it is smaller than the sum of its proper divisors (16245123552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6909644448 is a wasteful number, since it uses less digits than its factorization.

6909644448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The square root of 6909644448 is about 83124.2711125938. The cubic root of 6909644448 is about 1904.6648485559.

The spelling of 6909644448 in words is "six billion, nine hundred nine million, six hundred forty-four thousand, four hundred forty-eight".