3957785 has 8 divisors (see below), whose sum is σ = 5114760. Its totient is φ = 2922624.

The previous prime is 3957781. The next prime is 3957799. The reversal of 3957785 is 5877593.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 100489 + 3857296 = 317^2 + 1964^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3957785 - 2² = 3957781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3957781) 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, 30380 + ... + 30509.

It is an arithmetic number, because the mean of its divisors is an integer number (639345).

Almost surely, 2^3957785 is an apocalyptic number.

It is an amenable number.

3957785 is a deficient number, since it is larger than the sum of its proper divisors (1156975).

3957785 is a wasteful number, since it uses less digits than its factorization.

3957785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60907.

The product of its digits is 264600, while the sum is 44.

The square root of 3957785 is about 1989.4182566771. The cubic root of 3957785 is about 158.1796946091.

The spelling of 3957785 in words is "three million, nine hundred fifty-seven thousand, seven hundred eighty-five".