3875409 has 6 divisors (see below), whose sum is σ = 5597826. Its totient is φ = 2583600.

The previous prime is 3875407. The next prime is 3875429. The reversal of 3875409 is 9045783.

It can be written as a sum of positive squares in only one way, i.e., 2471184 + 1404225 = 1572^2 + 1185^2 .

It is not a de Polignac number, because 3875409 - 2¹ = 3875407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3875401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215292 + ... + 215309.

It is an arithmetic number, because the mean of its divisors is an integer number (932971).

Almost surely, 2^3875409 is an apocalyptic number.

It is an amenable number.

3875409 is a deficient number, since it is larger than the sum of its proper divisors (1722417).

3875409 is a wasteful number, since it uses less digits than its factorization.

3875409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430607 (or 430604 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 3875409 is about 1968.6058518657. The cubic root of 3875409 is about 157.0745585528.

The spelling of 3875409 in words is "three million, eight hundred seventy-five thousand, four hundred nine".