3920424 has 16 divisors (see below), whose sum is σ = 9801120. Its totient is φ = 1306800.

The previous prime is 3920417. The next prime is 3920429. The reversal of 3920424 is 4240293.

It is a happy number.

3920424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 163351 = 3920424 / (3 + 9 + 2 + 0 + 4 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 3920394 and 3920403.

It is not an unprimeable number, because it can be changed into a prime (3920429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81652 + ... + 81699.

It is an arithmetic number, because the mean of its divisors is an integer number (612570).

Almost surely, 2^3920424 is an apocalyptic number.

It is an amenable number.

3920424 is an abundant number, since it is smaller than the sum of its proper divisors (5880696).

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

3920424 is a wasteful number, since it uses less digits than its factorization.

3920424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163360 (or 163356 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 3920424 is about 1980.0060605968. The cubic root of 3920424 is about 157.6803879274.

Subtracting from 3920424 its sum of digits (24), we obtain a square (3920400 = 1980²).

The spelling of 3920424 in words is "three million, nine hundred twenty thousand, four hundred twenty-four".