6349943408 has 80 divisors (see below), whose sum is σ = 13036308480. Its totient is φ = 2990372352.

The previous prime is 6349943401. The next prime is 6349943417. The reversal of 6349943408 is 8043499436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6349943401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8831273 + ... + 8831991.

It is an arithmetic number, because the mean of its divisors is an integer number (162953856).

Almost surely, 2^6349943408 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 6349943408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6518154240).

6349943408 is an abundant number, since it is smaller than the sum of its proper divisors (6686365072).

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

6349943408 is a wasteful number, since it uses less digits than its factorization.

6349943408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 50.

The square root of 6349943408 is about 79686.5321619657. The cubic root of 6349943408 is about 1851.7823978873.

The spelling of 6349943408 in words is "six billion, three hundred forty-nine million, nine hundred forty-three thousand, four hundred eight".