3920306 has 16 divisors (see below), whose sum is σ = 6386688. Its totient is φ = 1794000.

The previous prime is 3920303. The next prime is 3920311. The reversal of 3920306 is 6030293.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3920303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2831 + ... + 3981.

It is an arithmetic number, because the mean of its divisors is an integer number (399168).

Almost surely, 2^3920306 is an apocalyptic number.

3920306 is a deficient number, since it is larger than the sum of its proper divisors (2466382).

3920306 is a wasteful number, since it uses less digits than its factorization.

3920306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 3920306 is about 1979.9762624840. The cubic root of 3920306 is about 157.6788059155.

Adding to 3920306 its reverse (6030293), we get a palindrome (9950599).

The spelling of 3920306 in words is "three million, nine hundred twenty thousand, three hundred six".