3904406 has 8 divisors (see below), whose sum is σ = 6389064. Its totient is φ = 1774720.

The previous prime is 3904387. The next prime is 3904409. The reversal of 3904406 is 6044093.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3904409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88715 + ... + 88758.

It is an arithmetic number, because the mean of its divisors is an integer number (798633).

Almost surely, 2^3904406 is an apocalyptic number.

3904406 is a deficient number, since it is larger than the sum of its proper divisors (2484658).

3904406 is a wasteful number, since it uses less digits than its factorization.

3904406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177486.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 3904406 is about 1975.9569833374. The cubic root of 3904406 is about 157.4653455292.

Adding to 3904406 its reverse (6044093), we get a palindrome (9948499).

It can be divided in two parts, 3 and 904406, that added together give a palindrome (904409).

The spelling of 3904406 in words is "three million, nine hundred four thousand, four hundred six".