3960407685 has 24 divisors (see below), whose sum is σ = 6861586464. Its totient is φ = 1949737920.

The previous prime is 3960407653. The next prime is 3960407687. The reversal of 3960407685 is 5867040693.

It is not a de Polignac number, because 3960407685 - 2⁵ = 3960407653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3960407687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 778611 + ... + 783680.

It is an arithmetic number, because the mean of its divisors is an integer number (285899436).

Almost surely, 2^3960407685 is an apocalyptic number.

It is an amenable number.

3960407685 is a deficient number, since it is larger than the sum of its proper divisors (2901178779).

3960407685 is a wasteful number, since it uses less digits than its factorization.

3960407685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562325 (or 1562312 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 3960407685 is about 62931.7700768062. The cubic root of 3960407685 is about 1582.1462693526.

The spelling of 3960407685 in words is "three billion, nine hundred sixty million, four hundred seven thousand, six hundred eighty-five".