3940023006 has 48 divisors (see below), whose sum is σ = 8964187920. Its totient is φ = 1282765680.

The previous prime is 3940022993. The next prime is 3940023007. The reversal of 3940023006 is 6003200493.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940023007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80116 + ... + 119576.

It is an arithmetic number, because the mean of its divisors is an integer number (186753915).

Almost surely, 2^3940023006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3940023006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4482093960).

3940023006 is an abundant number, since it is smaller than the sum of its proper divisors (5024164914).

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

3940023006 is a wasteful number, since it uses less digits than its factorization.

3940023006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39558 (or 39509 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 3940023006 is about 62769.6025636613. The cubic root of 3940023006 is about 1579.4271017547.

Adding to 3940023006 its reverse (6003200493), we get a palindrome (9943223499).

The spelling of 3940023006 in words is "three billion, nine hundred forty million, twenty-three thousand, six".