3905541 has 12 divisors (see below), whose sum is σ = 5660460. Its totient is φ = 2594880.

The previous prime is 3905533. The next prime is 3905543. The reversal of 3905541 is 1455093.

It can be written as a sum of positive squares in 2 ways, for example, as 3132900 + 772641 = 1770^2 + 879^2 .

It is not a de Polignac number, because 3905541 - 2³ = 3905533 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

3905541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3905543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3151 + ... + 4211.

It is an arithmetic number, because the mean of its divisors is an integer number (471705).

Almost surely, 2^3905541 is an apocalyptic number.

It is an amenable number.

3905541 is a deficient number, since it is larger than the sum of its proper divisors (1754919).

3905541 is a wasteful number, since it uses less digits than its factorization.

3905541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476 (or 1473 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 3905541 is about 1976.2441650768. The cubic root of 3905541 is about 157.4806022974.

The spelling of 3905541 in words is "three million, nine hundred five thousand, five hundred forty-one".