3505939 has 4 divisors (see below), whose sum is σ = 3511456. Its totient is φ = 3500424.

The previous prime is 3505933. The next prime is 3505949. The reversal of 3505939 is 9395053.

It is a happy number.

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 3505939 - 2¹¹ = 3503891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3505933) 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, 1659 + ... + 3124.

It is an arithmetic number, because the mean of its divisors is an integer number (877864).

Almost surely, 2^3505939 is an apocalyptic number.

3505939 is a deficient number, since it is larger than the sum of its proper divisors (5517).

3505939 is an equidigital number, since it uses as much as digits as its factorization.

3505939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5516.

The product of its (nonzero) digits is 18225, while the sum is 34.

The square root of 3505939 is about 1872.4152851331. The cubic root of 3505939 is about 151.9152776936.

It can be divided in two parts, 3505 and 939, that added together give a palindrome (4444).

The spelling of 3505939 in words is "three million, five hundred five thousand, nine hundred thirty-nine".