3971441 has 4 divisors (see below), whose sum is σ = 4099584. Its totient is φ = 3843300.

The previous prime is 3971431. The next prime is 3971459. The reversal of 3971441 is 1441793.

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 3971441 - 2⁶ = 3971377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3971411) 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, 64025 + ... + 64086.

It is an arithmetic number, because the mean of its divisors is an integer number (1024896).

Almost surely, 2^3971441 is an apocalyptic number.

3971441 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3971441 is a deficient number, since it is larger than the sum of its proper divisors (128143).

3971441 is a wasteful number, since it uses less digits than its factorization.

3971441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128142.

The product of its digits is 3024, while the sum is 29.

The square root of 3971441 is about 1992.8474602939. The cubic root of 3971441 is about 158.3614142869.

The spelling of 3971441 in words is "three million, nine hundred seventy-one thousand, four hundred forty-one".