3506239 has 4 divisors (see below), whose sum is σ = 3825000. Its totient is φ = 3187480.

The previous prime is 3506213. The next prime is 3506249. The reversal of 3506239 is 9326053.

3506239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3506239 - 2⁵ = 3506207 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3506249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159364 + ... + 159385.

It is an arithmetic number, because the mean of its divisors is an integer number (956250).

Almost surely, 2^3506239 is an apocalyptic number.

3506239 is a deficient number, since it is larger than the sum of its proper divisors (318761).

3506239 is a wasteful number, since it uses less digits than its factorization.

3506239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318760.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 3506239 is about 1872.4953938528. The cubic root of 3506239 is about 151.9196106539.

The spelling of 3506239 in words is "three million, five hundred six thousand, two hundred thirty-nine".