3945391360 has 144 divisors (see below), whose sum is σ = 9735163200. Its totient is φ = 1531363328.

The previous prime is 3945391357. The next prime is 3945391369. The reversal of 3945391360 is 631935493.

It is a super-2 number, since 2×3945391360² = 31132225967125299200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945391369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6720987 + ... + 6721573.

It is an arithmetic number, because the mean of its divisors is an integer number (67605300).

Almost surely, 2^3945391360 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 3945391360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4867581600).

3945391360 is an abundant number, since it is smaller than the sum of its proper divisors (5789771840).

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

3945391360 is an equidigital number, since it uses as much as digits as its factorization.

3945391360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 43.

The square root of 3945391360 is about 62812.3503779312. The cubic root of 3945391360 is about 1580.1441090583.

The spelling of 3945391360 in words is "three billion, nine hundred forty-five million, three hundred ninety-one thousand, three hundred sixty".