3903140 has 12 divisors (see below), whose sum is σ = 8196636. Its totient is φ = 1561248.

The previous prime is 3903131. The next prime is 3903143. The reversal of 3903140 is 413093.

It can be written as a sum of positive squares in 2 ways, for example, as 2930944 + 972196 = 1712^2 + 986^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 195157 = 3903140 / (3 + 9 + 0 + 3 + 1 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (3903143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97559 + ... + 97598.

It is an arithmetic number, because the mean of its divisors is an integer number (683053).

Almost surely, 2^3903140 is an apocalyptic number.

It is an amenable number.

3903140 is an abundant number, since it is smaller than the sum of its proper divisors (4293496).

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

3903140 is a wasteful number, since it uses less digits than its factorization.

3903140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195166 (or 195164 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 3903140 is about 1975.6366062614. The cubic root of 3903140 is about 157.4483243589.

The spelling of 3903140 in words is "three million, nine hundred three thousand, one hundred forty".