3945321960 has 64 divisors (see below), whose sum is σ = 11914404480. Its totient is φ = 1045113600.

The previous prime is 3945321901. The next prime is 3945321967. The reversal of 3945321960 is 691235493.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3945321967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90747 + ... + 126986.

It is an arithmetic number, because the mean of its divisors is an integer number (186162570).

Almost surely, 2^3945321960 is an apocalyptic number.

3945321960 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3945321960 is an abundant number, since it is smaller than the sum of its proper divisors (7969082520).

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

3945321960 is a wasteful number, since it uses less digits than its factorization.

3945321960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217898 (or 217894 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 3945321960 is about 62811.7979363750. The cubic root of 3945321960 is about 1580.1348440168.

The spelling of 3945321960 in words is "three billion, nine hundred forty-five million, three hundred twenty-one thousand, nine hundred sixty".