3965939712 has 416 divisors, whose sum is σ = 13839513600. Its totient is φ = 1098842112.

The previous prime is 3965939701. The next prime is 3965939723. The reversal of 3965939712 is 2179395693.

It is a happy number.

3965939712 is a `hidden beast` number, since 39 + 6 + 593 + 9 + 7 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (3965939701) and next prime (3965939723).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36384714 + ... + 36384822.

Almost surely, 2^3965939712 is an apocalyptic number.

3965939712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3965939712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6919756800).

3965939712 is an abundant number, since it is smaller than the sum of its proper divisors (9873573888).

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

3965939712 is a wasteful number, since it uses less digits than its factorization.

3965939712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 168 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 54.

The square root of 3965939712 is about 62975.7073163930. The cubic root of 3965939712 is about 1582.8825911732.

The spelling of 3965939712 in words is "three billion, nine hundred sixty-five million, nine hundred thirty-nine thousand, seven hundred twelve".