3920218 has 8 divisors (see below), whose sum is σ = 5889312. Its totient is φ = 1957116.

The previous prime is 3920209. The next prime is 3920227. The reversal of 3920218 is 8120293.

It is an interprime number because it is at equal distance from previous prime (3920209) and next prime (3920227).

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

It is a junction number, because it is equal to n+sod(n) for n = 3920192 and 3920201.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 921 + ... + 2947.

It is an arithmetic number, because the mean of its divisors is an integer number (736164).

Almost surely, 2^3920218 is an apocalyptic number.

3920218 is a deficient number, since it is larger than the sum of its proper divisors (1969094).

3920218 is a wasteful number, since it uses less digits than its factorization.

3920218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 3920218 is about 1979.9540398706. The cubic root of 3920218 is about 157.6776260893.

The spelling of 3920218 in words is "three million, nine hundred twenty thousand, two hundred eighteen".