3809140 has 24 divisors (see below), whose sum is σ = 8111880. Its totient is φ = 1502208.

The previous prime is 3809137. The next prime is 3809149. The reversal of 3809140 is 419083.

It can be written as a sum of positive squares in 4 ways, for example, as 438244 + 3370896 = 662^2 + 1836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3809149) 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 7 ways as a sum of consecutive naturals, for example, 156 + ... + 2764.

It is an arithmetic number, because the mean of its divisors is an integer number (337995).

Almost surely, 2^3809140 is an apocalyptic number.

It is an amenable number.

3809140 is an abundant number, since it is smaller than the sum of its proper divisors (4302740).

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

3809140 is a wasteful number, since it uses less digits than its factorization.

3809140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691 (or 2689 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 3809140 is about 1951.7018214881. The cubic root of 3809140 is about 156.1740879251.

The spelling of 3809140 in words is "three million, eight hundred nine thousand, one hundred forty".