4643971 has 4 divisors (see below), whose sum is σ = 4713352. Its totient is φ = 4574592.

The previous prime is 4643963. The next prime is 4643983. The reversal of 4643971 is 1793464.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4643971 - 2³ = 4643963 is a prime.

It is a Duffinian number.

4643971 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4643911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34590 + ... + 34723.

It is an arithmetic number, because the mean of its divisors is an integer number (1178338).

Almost surely, 2^4643971 is an apocalyptic number.

4643971 is a deficient number, since it is larger than the sum of its proper divisors (69381).

4643971 is an equidigital number, since it uses as much as digits as its factorization.

4643971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69380.

The product of its digits is 18144, while the sum is 34.

The square root of 4643971 is about 2154.9874709613. The cubic root of 4643971 is about 166.8385857132.

The spelling of 4643971 in words is "four million, six hundred forty-three thousand, nine hundred seventy-one".