3500440 has 16 divisors (see below), whose sum is σ = 7876080. Its totient is φ = 1400160.

The previous prime is 3500429. The next prime is 3500443. The reversal of 3500440 is 440053.

3500440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3500443) 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, 43716 + ... + 43795.

It is an arithmetic number, because the mean of its divisors is an integer number (492255).

Almost surely, 2^3500440 is an apocalyptic number.

It is an amenable number.

3500440 is an abundant number, since it is smaller than the sum of its proper divisors (4375640).

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

3500440 is a wasteful number, since it uses less digits than its factorization.

3500440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87522 (or 87518 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 3500440 is about 1870.9462846378. The cubic root of 3500440 is about 151.8358107041.

Adding to 3500440 its reverse (440053), we get a palindrome (3940493).

The spelling of 3500440 in words is "three million, five hundred thousand, four hundred forty".