3961782 has 72 divisors (see below), whose sum is σ = 10083528. Its totient is φ = 1119360.

The previous prime is 3961781. The next prime is 3961813. The reversal of 3961782 is 2871693.

3961782 is a `hidden beast` number, since 39 + 617 + 8 + 2 = 666.

3961782 is a modest number, since divided by 1782 gives 396 as remainder.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3961781) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 36973 + ... + 37079.

It is an arithmetic number, because the mean of its divisors is an integer number (140049).

Almost surely, 2^3961782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3961782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5041764).

3961782 is an abundant number, since it is smaller than the sum of its proper divisors (6121746).

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

3961782 is a wasteful number, since it uses less digits than its factorization.

3961782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 140 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 3961782 is about 1990.4225682000. The cubic root of 3961782 is about 158.2329256902.

The spelling of 3961782 in words is "three million, nine hundred sixty-one thousand, seven hundred eighty-two".