3521839 has 8 divisors (see below), whose sum is σ = 3749760. Its totient is φ = 3296256.

The previous prime is 3521831. The next prime is 3521857. The reversal of 3521839 is 9381253.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3521839 - 2³ = 3521831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3521839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3327 + ... + 4255.

It is an arithmetic number, because the mean of its divisors is an integer number (468720).

Almost surely, 2^3521839 is an apocalyptic number.

3521839 is a deficient number, since it is larger than the sum of its proper divisors (227921).

3521839 is a wasteful number, since it uses less digits than its factorization.

3521839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169.

The product of its digits is 6480, while the sum is 31.

The square root of 3521839 is about 1876.6563350811. The cubic root of 3521839 is about 152.1445848396.

The spelling of 3521839 in words is "three million, five hundred twenty-one thousand, eight hundred thirty-nine".