3977331320 has 32 divisors (see below), whose sum is σ = 8966153520. Its totient is φ = 1587882240.

The previous prime is 3977331299. The next prime is 3977331329. The reversal of 3977331320 is 231337793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977331329) 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, 74141 + ... + 115980.

Almost surely, 2^3977331320 is an apocalyptic number.

It is an amenable number.

3977331320 is an abundant number, since it is smaller than the sum of its proper divisors (4988822200).

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

3977331320 is a wasteful number, since it uses less digits than its factorization.

3977331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190655 (or 190651 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 38.

The square root of 3977331320 is about 63066.0869247490. The cubic root of 3977331320 is about 1584.3966788294.

The spelling of 3977331320 in words is "three billion, nine hundred seventy-seven million, three hundred thirty-one thousand, three hundred twenty".