3950221 has 4 divisors (see below), whose sum is σ = 4309344. Its totient is φ = 3591100.

The previous prime is 3950213. The next prime is 3950257. The reversal of 3950221 is 1220593.

3950221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3950221 - 2³ = 3950213 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3950192 and 3950201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3950201) 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, 179545 + ... + 179566.

It is an arithmetic number, because the mean of its divisors is an integer number (1077336).

Almost surely, 2^3950221 is an apocalyptic number.

It is an amenable number.

3950221 is a deficient number, since it is larger than the sum of its proper divisors (359123).

3950221 is a wasteful number, since it uses less digits than its factorization.

3950221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359122.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 3950221 is about 1987.5162892414. The cubic root of 3950221 is about 158.0788609155.

The spelling of 3950221 in words is "three million, nine hundred fifty thousand, two hundred twenty-one".