3439521 has 12 divisors (see below), whose sum is σ = 4984980. Its totient is φ = 2285280.

The previous prime is 3439477. The next prime is 3439529. The reversal of 3439521 is 1259343.

It can be written as a sum of positive squares in 2 ways, for example, as 1535121 + 1904400 = 1239^2 + 1380^2 .

It is not a de Polignac number, because 3439521 - 2⁷ = 3439393 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3439529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3735 + ... + 4563.

It is an arithmetic number, because the mean of its divisors is an integer number (415415).

Almost surely, 2^3439521 is an apocalyptic number.

It is an amenable number.

3439521 is a deficient number, since it is larger than the sum of its proper divisors (1545459).

3439521 is a wasteful number, since it uses less digits than its factorization.

3439521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296 (or 1293 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 3439521 is about 1854.5945648578. The cubic root of 3439521 is about 150.9498393395.

The spelling of 3439521 in words is "three million, four hundred thirty-nine thousand, five hundred twenty-one".