3942786 has 8 divisors (see below), whose sum is σ = 7885584. Its totient is φ = 1314260.

The previous prime is 3942781. The next prime is 3942839. The reversal of 3942786 is 6872493.

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

3942786 is an admirable number.

It is a super-2 number, since 2×3942786² = 31091122883592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3942781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328560 + ... + 328571.

It is an arithmetic number, because the mean of its divisors is an integer number (985698).

Almost surely, 2^3942786 is an apocalyptic number.

3942786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3942786 is a wasteful number, since it uses less digits than its factorization.

3942786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657136.

The product of its digits is 72576, while the sum is 39.

The square root of 3942786 is about 1985.6449833744. The cubic root of 3942786 is about 157.9796213636.

The spelling of 3942786 in words is "three million, nine hundred forty-two thousand, seven hundred eighty-six".