3965787 has 16 divisors (see below), whose sum is σ = 6714880. Its totient is φ = 2266056.

The previous prime is 3965783. The next prime is 3965789. The reversal of 3965787 is 7875693.

It is a happy number.

It is not a de Polignac number, because 3965787 - 2² = 3965783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3965783) 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, 10303 + ... + 10680.

It is an arithmetic number, because the mean of its divisors is an integer number (419680).

Almost surely, 2^3965787 is an apocalyptic number.

3965787 is a deficient number, since it is larger than the sum of its proper divisors (2749093).

3965787 is a wasteful number, since it uses less digits than its factorization.

3965787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20999 (or 20993 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 3965787 is about 1991.4283818405. The cubic root of 3965787 is about 158.2862274150.

The spelling of 3965787 in words is "three million, nine hundred sixty-five thousand, seven hundred eighty-seven".