3966420 has 24 divisors (see below), whose sum is σ = 11106144. Its totient is φ = 1057696.

The previous prime is 3966409. The next prime is 3966433. The reversal of 3966420 is 246693.

3966420 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 (30) 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 (30).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32994 + ... + 33113.

It is an arithmetic number, because the mean of its divisors is an integer number (462756).

Almost surely, 2^3966420 is an apocalyptic number.

3966420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3966420 is an abundant number, since it is smaller than the sum of its proper divisors (7139724).

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

3966420 is a wasteful number, since it uses less digits than its factorization.

3966420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66119 (or 66117 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 3966420 is about 1991.5873066476. The cubic root of 3966420 is about 158.2946485978.

The spelling of 3966420 in words is "three million, nine hundred sixty-six thousand, four hundred twenty".