3962221 has 4 divisors (see below), whose sum is σ = 4016572. Its totient is φ = 3907872.

The previous prime is 3962213. The next prime is 3962237. The reversal of 3962221 is 1222693.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1357225 + 2604996 = 1165^2 + 1614^2 .

It is a cyclic number.

It is not a de Polignac number, because 3962221 - 2³ = 3962213 is a prime.

It is a d-powerful number, because it can be written as 3¹¹ + 9² + 6⁸ + 2⁵ + 2¹³ + 2²¹ + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3962201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27066 + ... + 27211.

It is an arithmetic number, because the mean of its divisors is an integer number (1004143).

Almost surely, 2^3962221 is an apocalyptic number.

It is an amenable number.

3962221 is a deficient number, since it is larger than the sum of its proper divisors (54351).

3962221 is an equidigital number, since it uses as much as digits as its factorization.

3962221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54350.

The product of its digits is 1296, while the sum is 25.

The square root of 3962221 is about 1990.5328432357. The cubic root of 3962221 is about 158.2387700037.

The spelling of 3962221 in words is "three million, nine hundred sixty-two thousand, two hundred twenty-one".