6853469440 has 72 divisors (see below), whose sum is σ = 16443779688. Its totient is φ = 2736783360.

The previous prime is 6853469419. The next prime is 6853469479. The reversal of 6853469440 is 449643586.

It can be written as a sum of positive squares in 4 ways, for example, as 2425365504 + 4428103936 = 49248^2 + 66544^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816304 + ... + 824656.

It is an arithmetic number, because the mean of its divisors is an integer number (228385829).

Almost surely, 2^6853469440 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 6853469440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8221889844).

6853469440 is an abundant number, since it is smaller than the sum of its proper divisors (9590310248).

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

6853469440 is an equidigital number, since it uses as much as digits as its factorization.

6853469440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9015 (or 9001 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 49.

The square root of 6853469440 is about 82785.6837865099. The cubic root of 6853469440 is about 1899.4891923235.

The spelling of 6853469440 in words is "six billion, eight hundred fifty-three million, four hundred sixty-nine thousand, four hundred forty".