4197643 has 4 divisors (see below), whose sum is σ = 4211368. Its totient is φ = 4183920.

The previous prime is 4197631. The next prime is 4197647. The reversal of 4197643 is 3467914.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4197643 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4197599 and 4197608.

It is not an unprimeable number, because it can be changed into a prime (4197647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6393 + ... + 7018.

It is an arithmetic number, because the mean of its divisors is an integer number (1052842).

Almost surely, 2^4197643 is an apocalyptic number.

4197643 is a deficient number, since it is larger than the sum of its proper divisors (13725).

4197643 is a wasteful number, since it uses less digits than its factorization.

4197643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13724.

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

The square root of 4197643 is about 2048.8150233733. The cubic root of 4197643 is about 161.3126775952.

The spelling of 4197643 in words is "four million, one hundred ninety-seven thousand, six hundred forty-three".