3499521 has 4 divisors (see below), whose sum is σ = 4666032. Its totient is φ = 2333012.

The previous prime is 3499513. The next prime is 3499523. The reversal of 3499521 is 1259943.

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 3499521 - 2³ = 3499513 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3499523) 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, 583251 + ... + 583256.

It is an arithmetic number, because the mean of its divisors is an integer number (1166508).

Almost surely, 2^3499521 is an apocalyptic number.

It is an amenable number.

3499521 is a deficient number, since it is larger than the sum of its proper divisors (1166511).

3499521 is a wasteful number, since it uses less digits than its factorization.

3499521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166510.

The product of its digits is 9720, while the sum is 33.

The square root of 3499521 is about 1870.7006708717. The cubic root of 3499521 is about 151.8225219629.

It can be divided in two parts, 349 and 9521, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 3499521 in words is "three million, four hundred ninety-nine thousand, five hundred twenty-one".