3951786 has 48 divisors (see below), whose sum is σ = 8753184. Its totient is φ = 1188096.

The previous prime is 3951781. The next prime is 3951793. The reversal of 3951786 is 6871593.

3951786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3951786² = 31233225179592, which contains 22 as substring.

Its product of digits (45360) is a multiple of the sum of its prime factors (135).

It is not an unprimeable number, because it can be changed into a prime (3951781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74536 + ... + 74588.

It is an arithmetic number, because the mean of its divisors is an integer number (182358).

Almost surely, 2^3951786 is an apocalyptic number.

3951786 is an abundant number, since it is smaller than the sum of its proper divisors (4801398).

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

3951786 is a wasteful number, since it uses less digits than its factorization.

3951786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 118 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 3951786 is about 1987.9099577194. The cubic root of 3951786 is about 158.0997340729.

The spelling of 3951786 in words is "three million, nine hundred fifty-one thousand, seven hundred eighty-six".