3920830 has 32 divisors (see below), whose sum is σ = 7384608. Its totient is φ = 1497600.

The previous prime is 3920797. The next prime is 3920843. The reversal of 3920830 is 380293.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3920795 and 3920804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29865 + ... + 29995.

It is an arithmetic number, because the mean of its divisors is an integer number (230769).

Almost surely, 2^3920830 is an apocalyptic number.

3920830 is a deficient number, since it is larger than the sum of its proper divisors (3463778).

3920830 is a wasteful number, since it uses less digits than its factorization.

3920830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3920830 is about 1980.1085828813. The cubic root of 3920830 is about 157.6858308785.

The spelling of 3920830 in words is "three million, nine hundred twenty thousand, eight hundred thirty".