3981622008 has 96 divisors (see below), whose sum is σ = 12469962960. Its totient is φ = 1050094080.

The previous prime is 3981621947. The next prime is 3981622013. The reversal of 3981622008 is 8002261893.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114933 + ... + 145508.

Almost surely, 2^3981622008 is an apocalyptic number.

It is an amenable number.

3981622008 is an abundant number, since it is smaller than the sum of its proper divisors (8488340952).

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

3981622008 is a wasteful number, since it uses less digits than its factorization.

3981622008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260477 (or 260466 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 3981622008 is about 63100.0951504829. The cubic root of 3981622008 is about 1584.9662155490.

The spelling of 3981622008 in words is "three billion, nine hundred eighty-one million, six hundred twenty-two thousand, eight".