3904540 has 24 divisors (see below), whose sum is σ = 8249472. Its totient is φ = 1552320.

The previous prime is 3904517. The next prime is 3904547. The reversal of 3904540 is 454093.

3904540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3904540² = 30490865223200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3904547) 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 7 ways as a sum of consecutive naturals, for example, 3445 + ... + 4435.

It is an arithmetic number, because the mean of its divisors is an integer number (343728).

Almost surely, 2^3904540 is an apocalyptic number.

It is an amenable number.

3904540 is an abundant number, since it is smaller than the sum of its proper divisors (4344932).

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

3904540 is a wasteful number, since it uses less digits than its factorization.

3904540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197 (or 1195 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 3904540 is about 1975.9908906673. The cubic root of 3904540 is about 157.4671469227.

It can be divided in two parts, 3904 and 540, that added together give a palindrome (4444).

The spelling of 3904540 in words is "three million, nine hundred four thousand, five hundred forty".