3947441 has 4 divisors (see below), whose sum is σ = 3951984. Its totient is φ = 3942900.

The previous prime is 3947431. The next prime is 3947453. The reversal of 3947441 is 1447493.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1447493 = 223 ⋅6491.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3947441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3947398 and 3947407.

It is not an unprimeable number, because it can be changed into a prime (3947401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515 + ... + 2856.

It is an arithmetic number, because the mean of its divisors is an integer number (987996).

Almost surely, 2^3947441 is an apocalyptic number.

It is an amenable number.

3947441 is a deficient number, since it is larger than the sum of its proper divisors (4543).

3947441 is a wasteful number, since it uses less digits than its factorization.

3947441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4542.

The product of its digits is 12096, while the sum is 32.

The square root of 3947441 is about 1986.8168008148. The cubic root of 3947441 is about 158.0417691203.

The spelling of 3947441 in words is "three million, nine hundred forty-seven thousand, four hundred forty-one".