6388426744 has 48 divisors (see below), whose sum is σ = 14000159880. Its totient is φ = 2724886080.

The previous prime is 6388426729. The next prime is 6388426757. The reversal of 6388426744 is 4476248836.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6388426691 and 6388426700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44094 + ... + 121330.

Almost surely, 2^6388426744 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 6388426744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7000079940).

6388426744 is an abundant number, since it is smaller than the sum of its proper divisors (7611733136).

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

6388426744 is a wasteful number, since it uses less digits than its factorization.

6388426744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77468 (or 77457 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 52.

The square root of 6388426744 is about 79927.6344201428. The cubic root of 6388426744 is about 1855.5157270208.

The spelling of 6388426744 in words is "six billion, three hundred eighty-eight million, four hundred twenty-six thousand, seven hundred forty-four".