3921466 has 4 divisors (see below), whose sum is σ = 5882202. Its totient is φ = 1960732.

The previous prime is 3921451. The next prime is 3921497. The reversal of 3921466 is 6641293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6641293 = 79 ⋅84067.

It can be written as a sum of positive squares in only one way, i.e., 3744225 + 177241 = 1935^2 + 421^2 .

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 Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980365 + ... + 980368.

Almost surely, 2^3921466 is an apocalyptic number.

3921466 is a deficient number, since it is larger than the sum of its proper divisors (1960736).

3921466 is a wasteful number, since it uses less digits than its factorization.

3921466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960735.

The product of its digits is 7776, while the sum is 31.

The square root of 3921466 is about 1980.2691736226. The cubic root of 3921466 is about 157.6943565194.

The spelling of 3921466 in words is "three million, nine hundred twenty-one thousand, four hundred sixty-six".