3980657772 has 216 divisors, whose sum is σ = 12555029760. Its totient is φ = 1041206400.

The previous prime is 3980657761. The next prime is 3980657783. The reversal of 3980657772 is 2777560893.

It is an interprime number because it is at equal distance from previous prime (3980657761) and next prime (3980657783).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6430479 + ... + 6431097.

Almost surely, 2^3980657772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3980657772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6277514880).

3980657772 is an abundant number, since it is smaller than the sum of its proper divisors (8574371988).

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

3980657772 is a wasteful number, since it uses less digits than its factorization.

3980657772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 795 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 54.

The square root of 3980657772 is about 63092.4541605413. The cubic root of 3980657772 is about 1584.8382605877.

The spelling of 3980657772 in words is "three billion, nine hundred eighty million, six hundred fifty-seven thousand, seven hundred seventy-two".