3965541 has 4 divisors (see below), whose sum is σ = 5287392. Its totient is φ = 2643692.

The previous prime is 3965537. The next prime is 3965569. The reversal of 3965541 is 1455693.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3965541 - 2² = 3965537 is a prime.

It is a d-powerful number, because it can be written as 3¹⁰ + 9 + 6³ + 5⁹ + 5⁹ + 4² + 1 .

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965581) 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, 660921 + ... + 660926.

It is an arithmetic number, because the mean of its divisors is an integer number (1321848).

Almost surely, 2^3965541 is an apocalyptic number.

It is an amenable number.

3965541 is a deficient number, since it is larger than the sum of its proper divisors (1321851).

3965541 is a wasteful number, since it uses less digits than its factorization.

3965541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321850.

The product of its digits is 16200, while the sum is 33.

The square root of 3965541 is about 1991.3666161709. The cubic root of 3965541 is about 158.2829544861.

The spelling of 3965541 in words is "three million, nine hundred sixty-five thousand, five hundred forty-one".