3980988647 has 4 divisors (see below), whose sum is σ = 4040406456. Its totient is φ = 3921570840.

The previous prime is 3980988637. The next prime is 3980988701. The reversal of 3980988647 is 7468890893.

It is a happy number.

3980988647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3980988647 - 2⁴ = 3980988631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3980988647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3980988637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29708804 + ... + 29708937.

It is an arithmetic number, because the mean of its divisors is an integer number (1010101614).

Almost surely, 2^3980988647 is an apocalyptic number.

3980988647 is a deficient number, since it is larger than the sum of its proper divisors (59417809).

3980988647 is an equidigital number, since it uses as much as digits as its factorization.

3980988647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59417808.

The product of its (nonzero) digits is 20901888, while the sum is 62.

The square root of 3980988647 is about 63095.0762500530. The cubic root of 3980988647 is about 1584.8821703183.

The spelling of 3980988647 in words is "three billion, nine hundred eighty million, nine hundred eighty-eight thousand, six hundred forty-seven".