3921366 has 8 divisors (see below), whose sum is σ = 7842744. Its totient is φ = 1307120.

The previous prime is 3921347. The next prime is 3921367. The reversal of 3921366 is 6631293.

It is a happy number.

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

3921366 is an admirable number.

It is a super-2 number, since 2×3921366² = 30754222611912, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921367) 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, 326775 + ... + 326786.

It is an arithmetic number, because the mean of its divisors is an integer number (980343).

Almost surely, 2^3921366 is an apocalyptic number.

3921366 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.

3921366 is a wasteful number, since it uses less digits than its factorization.

3921366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653566.

The product of its digits is 5832, while the sum is 30.

The square root of 3921366 is about 1980.2439243689. The cubic root of 3921366 is about 157.6930160709.

The spelling of 3921366 in words is "three million, nine hundred twenty-one thousand, three hundred sixty-six".