3504421 has 4 divisors (see below), whose sum is σ = 3508492. Its totient is φ = 3500352.

The previous prime is 3504419. The next prime is 3504427. The reversal of 3504421 is 1244053.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2030625 + 1473796 = 1425^2 + 1214^2 .

It is a cyclic number.

It is not a de Polignac number, because 3504421 - 2¹ = 3504419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3504427) 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, 180 + ... + 2653.

It is an arithmetic number, because the mean of its divisors is an integer number (877123).

Almost surely, 2^3504421 is an apocalyptic number.

It is an amenable number.

3504421 is a deficient number, since it is larger than the sum of its proper divisors (4071).

3504421 is a wasteful number, since it uses less digits than its factorization.

3504421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 3504421 is about 1872.0098824525. The cubic root of 3504421 is about 151.8933491240.

Adding to 3504421 its reverse (1244053), we get a palindrome (4748474).

The spelling of 3504421 in words is "three million, five hundred four thousand, four hundred twenty-one".