3944197 has 4 divisors (see below), whose sum is σ = 3953740. Its totient is φ = 3934656.

The previous prime is 3944189. The next prime is 3944219. The reversal of 3944197 is 7914493.

3944197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 1986²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7914493 = 223 ⋅35491.

It can be written as a sum of positive squares in 2 ways, for example, as 443556 + 3500641 = 666^2 + 1871^2 .

It is a cyclic number.

It is not a de Polignac number, because 3944197 - 2³ = 3944189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944107) 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, 4122 + ... + 4987.

It is an arithmetic number, because the mean of its divisors is an integer number (988435).

Almost surely, 2^3944197 is an apocalyptic number.

It is an amenable number.

3944197 is a deficient number, since it is larger than the sum of its proper divisors (9543).

3944197 is an equidigital number, since it uses as much as digits as its factorization.

3944197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9542.

The product of its digits is 27216, while the sum is 37.

The square root of 3944197 is about 1986.0002517623. Note that the first 3 decimals coincide. The cubic root of 3944197 is about 157.9984644406.

The spelling of 3944197 in words is "three million, nine hundred forty-four thousand, one hundred ninety-seven".