3912213 has 4 divisors (see below), whose sum is σ = 5216288. Its totient is φ = 2608140.

The previous prime is 3912211. The next prime is 3912217. The reversal of 3912213 is 3122193.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3122193 = 3 ⋅1040731.

It is not a de Polignac number, because 3912213 - 2¹ = 3912211 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3912213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912211) 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, 652033 + ... + 652038.

It is an arithmetic number, because the mean of its divisors is an integer number (1304072).

Almost surely, 2^3912213 is an apocalyptic number.

It is an amenable number.

3912213 is a deficient number, since it is larger than the sum of its proper divisors (1304075).

3912213 is a wasteful number, since it uses less digits than its factorization.

3912213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304074.

The product of its digits is 324, while the sum is 21.

The square root of 3912213 is about 1977.9314952748. The cubic root of 3912213 is about 157.5702281923.

The spelling of 3912213 in words is "three million, nine hundred twelve thousand, two hundred thirteen".