3981247937 has 8 divisors (see below), whose sum is σ = 4043892000. Its totient is φ = 3918698784.

The previous prime is 3981247931. The next prime is 3981247957. The reversal of 3981247937 is 7397421893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3981247937 - 2¹² = 3981243841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3981247931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63314 + ... + 109412.

It is an arithmetic number, because the mean of its divisors is an integer number (505486500).

Almost surely, 2^3981247937 is an apocalyptic number.

It is an amenable number.

3981247937 is a deficient number, since it is larger than the sum of its proper divisors (62644063).

3981247937 is a wasteful number, since it uses less digits than its factorization.

3981247937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47455.

The product of its digits is 2286144, while the sum is 53.

The square root of 3981247937 is about 63097.1309728105. The cubic root of 3981247937 is about 1584.9165784527.

The spelling of 3981247937 in words is "three billion, nine hundred eighty-one million, two hundred forty-seven thousand, nine hundred thirty-seven".