4030643 has 4 divisors (see below), whose sum is σ = 4057488. Its totient is φ = 4003800.

The previous prime is 4030633. The next prime is 4030657. The reversal of 4030643 is 3460304.

It is a happy number.

4030643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4030643 - 2⁸ = 4030387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4030613) 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, 13196 + ... + 13497.

It is an arithmetic number, because the mean of its divisors is an integer number (1014372).

Almost surely, 2^4030643 is an apocalyptic number.

4030643 is a deficient number, since it is larger than the sum of its proper divisors (26845).

4030643 is a wasteful number, since it uses less digits than its factorization.

4030643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26844.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 4030643 is about 2007.6461341581. The cubic root of 4030643 is about 159.1444305563.

Adding to 4030643 its reverse (3460304), we get a palindrome (7490947).

The spelling of 4030643 in words is "four million, thirty thousand, six hundred forty-three".