3944001000 has 128 divisors (see below), whose sum is σ = 12953116800. Its totient is φ = 996364800.

The previous prime is 3944000999. The next prime is 3944001001. The reversal of 3944001000 is 1004493.

It is an interprime number because it is at equal distance from previous prime (3944000999) and next prime (3944001001).

It is not an unprimeable number, because it can be changed into a prime (3944001001) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 22404 + ... + 91596.

It is an arithmetic number, because the mean of its divisors is an integer number (101196225).

Almost surely, 2^3944001000 is an apocalyptic number.

3944001000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3944001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6476558400).

3944001000 is an abundant number, since it is smaller than the sum of its proper divisors (9009115800).

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

3944001000 is a wasteful number, since it uses less digits than its factorization.

3944001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69236 (or 69222 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 3944001000 is about 62801.2818340518. The cubic root of 3944001000 is about 1579.9584724438.

Adding to 3944001000 its reverse (1004493), we get a palindrome (3945005493).

The spelling of 3944001000 in words is "three billion, nine hundred forty-four million, one thousand".