3945226 has 4 divisors (see below), whose sum is σ = 5917842. Its totient is φ = 1972612.

The previous prime is 3945203. The next prime is 3945233. The reversal of 3945226 is 6225493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6225493 = 71 ⋅87683.

It can be written as a sum of positive squares in only one way, i.e., 3822025 + 123201 = 1955^2 + 351^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986305 + ... + 986308.

Almost surely, 2^3945226 is an apocalyptic number.

3945226 is a deficient number, since it is larger than the sum of its proper divisors (1972616).

3945226 is a wasteful number, since it uses less digits than its factorization.

3945226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972615.

The product of its digits is 12960, while the sum is 31.

The square root of 3945226 is about 1986.2592982791. The cubic root of 3945226 is about 158.0122032982.

The spelling of 3945226 in words is "three million, nine hundred forty-five thousand, two hundred twenty-six".