3440521 has 4 divisors (see below), whose sum is σ = 3932032. Its totient is φ = 2949012.

The previous prime is 3440513. The next prime is 3440527. The reversal of 3440521 is 1250443.

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 3440521 - 2³ = 3440513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3440527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245745 + ... + 245758.

It is an arithmetic number, because the mean of its divisors is an integer number (983008).

Almost surely, 2^3440521 is an apocalyptic number.

It is an amenable number.

3440521 is a deficient number, since it is larger than the sum of its proper divisors (491511).

3440521 is an equidigital number, since it uses as much as digits as its factorization.

3440521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491510.

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

The square root of 3440521 is about 1854.8641459686. The cubic root of 3440521 is about 150.9644668814.

Adding to 3440521 its reverse (1250443), we get a palindrome (4690964).

The spelling of 3440521 in words is "three million, four hundred forty thousand, five hundred twenty-one".