6441909340 has 96 divisors (see below), whose sum is σ = 14645010240. Its totient is φ = 2372198400.

The previous prime is 6441909323. The next prime is 6441909361. The reversal of 6441909340 is 439091446.

It is a junction number, because it is equal to n+sod(n) for n = 6441909293 and 6441909302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4875880 + ... + 4877200.

It is an arithmetic number, because the mean of its divisors is an integer number (152552190).

Almost surely, 2^6441909340 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 6441909340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7322505120).

6441909340 is an abundant number, since it is smaller than the sum of its proper divisors (8203100900).

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

6441909340 is a wasteful number, since it uses less digits than its factorization.

6441909340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1701 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 6441909340 is about 80261.5059664345. The cubic root of 6441909340 is about 1860.6793429374.

The spelling of 6441909340 in words is "six billion, four hundred forty-one million, nine hundred nine thousand, three hundred forty".