3992020 has 12 divisors (see below), whose sum is σ = 8383284. Its totient is φ = 1596800.

The previous prime is 3992011. The next prime is 3992029. The reversal of 3992020 is 202993.

It is an interprime number because it is at equal distance from previous prime (3992011) and next prime (3992029).

It can be written as a sum of positive squares in 2 ways, for example, as 1444804 + 2547216 = 1202^2 + 1596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3992029) 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 3 ways as a sum of consecutive naturals, for example, 99781 + ... + 99820.

It is an arithmetic number, because the mean of its divisors is an integer number (698607).

Almost surely, 2^3992020 is an apocalyptic number.

It is an amenable number.

3992020 is an abundant number, since it is smaller than the sum of its proper divisors (4391264).

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

3992020 is a wasteful number, since it uses less digits than its factorization.

3992020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199610 (or 199608 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 3992020 is about 1998.0040040000. The cubic root of 3992020 is about 158.6344727501.

The spelling of 3992020 in words is "three million, nine hundred ninety-two thousand, twenty".