4397643 has 6 divisors (see below), whose sum is σ = 6352164. Its totient is φ = 2931756.

The previous prime is 4397599. The next prime is 4397651. The reversal of 4397643 is 3467934.

4397643 is a `hidden beast` number, since 4 + 3 + 9 + 7 + 643 = 666.

It is not a de Polignac number, because 4397643 - 2⁹ = 4397131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4397598 and 4397607.

It is not an unprimeable number, because it can be changed into a prime (4397663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 244305 + ... + 244322.

It is an arithmetic number, because the mean of its divisors is an integer number (1058694).

Almost surely, 2^4397643 is an apocalyptic number.

4397643 is a deficient number, since it is larger than the sum of its proper divisors (1954521).

4397643 is a wasteful number, since it uses less digits than its factorization.

4397643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488633 (or 488630 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 4397643 is about 2097.0557932492. The cubic root of 4397643 is about 163.8349891934.

The spelling of 4397643 in words is "four million, three hundred ninety-seven thousand, six hundred forty-three".