3957206836 has 24 divisors (see below), whose sum is σ = 7952283360. Its totient is φ = 1704060000.

The previous prime is 3957206819. The next prime is 3957206837. The reversal of 3957206836 is 6386027593.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3957206836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3957206837) 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, 2365915 + ... + 2367586.

It is an arithmetic number, because the mean of its divisors is an integer number (331345140).

Almost surely, 2^3957206836 is an apocalyptic number.

It is an amenable number.

3957206836 is an abundant number, since it is smaller than the sum of its proper divisors (3995076524).

3957206836 is a wasteful number, since it uses less digits than its factorization.

3957206836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733535 (or 4733533 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 49.

The square root of 3957206836 is about 62906.3338305452. Note that the first 3 decimals coincide. The cubic root of 3957206836 is about 1581.7199179397.

The spelling of 3957206836 in words is "three billion, nine hundred fifty-seven million, two hundred six thousand, eight hundred thirty-six".