4640143 has 2 divisors, whose sum is σ = 4640144. Its totient is φ = 4640142.

The previous prime is 4640137. The next prime is 4640147. The reversal of 4640143 is 3410464.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4640143 - 2⁹ = 4639631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4640147) 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 as a sum of consecutive naturals, namely, 2320071 + 2320072.

It is an arithmetic number, because the mean of its divisors is an integer number (2320072).

Almost surely, 2^4640143 is an apocalyptic number.

4640143 is a deficient number, since it is larger than the sum of its proper divisors (1).

4640143 is an equidigital number, since it uses as much as digits as its factorization.

4640143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4640143 is about 2154.0991156398. The cubic root of 4640143 is about 166.7927317327.

The spelling of 4640143 in words is "four million, six hundred forty thousand, one hundred forty-three".