3421445 has 4 divisors (see below), whose sum is σ = 4105740. Its totient is φ = 2737152.

The previous prime is 3421433. The next prime is 3421447. The reversal of 3421445 is 5441243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5441243 = 1039 ⋅5237.

It can be written as a sum of positive squares in 2 ways, for example, as 702244 + 2719201 = 838^2 + 1649^2 .

It is a cyclic number.

It is not a de Polignac number, because 3421445 - 2¹⁰ = 3420421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3421445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421447) 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, 342140 + ... + 342149.

It is an arithmetic number, because the mean of its divisors is an integer number (1026435).

Almost surely, 2^3421445 is an apocalyptic number.

It is an amenable number.

3421445 is a deficient number, since it is larger than the sum of its proper divisors (684295).

3421445 is an equidigital number, since it uses as much as digits as its factorization.

3421445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684294.

The product of its digits is 1920, while the sum is 23.

The square root of 3421445 is about 1849.7148428880. The cubic root of 3421445 is about 150.6849416795.

Adding to 3421445 its reverse (5441243), we get a palindrome (8862688).

The spelling of 3421445 in words is "three million, four hundred twenty-one thousand, four hundred forty-five".