3992870 has 16 divisors (see below), whose sum is σ = 8214048. Its totient is φ = 1368960.

The previous prime is 3992843. The next prime is 3992873. The reversal of 3992870 is 782993.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3992873) 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 7 ways as a sum of consecutive naturals, for example, 28451 + ... + 28590.

It is an arithmetic number, because the mean of its divisors is an integer number (513378).

Almost surely, 2^3992870 is an apocalyptic number.

3992870 is an abundant number, since it is smaller than the sum of its proper divisors (4221178).

3992870 is a wasteful number, since it uses less digits than its factorization.

3992870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57055.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 3992870 is about 1998.2167049647. The cubic root of 3992870 is about 158.6457310214.

The spelling of 3992870 in words is "three million, nine hundred ninety-two thousand, eight hundred seventy".