3904506 has 12 divisors (see below), whose sum is σ = 8459802. Its totient is φ = 1301496.

The previous prime is 3904501. The next prime is 3904517. The reversal of 3904506 is 6054093.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3272481 + 632025 = 1809^2 + 795^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3904506.

It is not an unprimeable number, because it can be changed into a prime (3904501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108441 + ... + 108476.

Almost surely, 2^3904506 is an apocalyptic number.

3904506 is an abundant number, since it is smaller than the sum of its proper divisors (4555296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3904506 is a wasteful number, since it uses less digits than its factorization.

3904506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216925 (or 216922 counting only the distinct ones).

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

The square root of 3904506 is about 1975.9822873700. The cubic root of 3904506 is about 157.4666898566.

Adding to 3904506 its reverse (6054093), we get a palindrome (9958599).

The spelling of 3904506 in words is "three million, nine hundred four thousand, five hundred six".