6143639 has 2 divisors, whose sum is σ = 6143640. Its totient is φ = 6143638.

The previous prime is 6143629. The next prime is 6143651. The reversal of 6143639 is 9363416.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6143639 - 2¹⁶ = 6078103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6143609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3071819 + 3071820.

It is an arithmetic number, because the mean of its divisors is an integer number (3071820).

Almost surely, 2^6143639 is an apocalyptic number.

6143639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6143639 is an equidigital number, since it uses as much as digits as its factorization.

6143639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 6143639 is about 2478.6365203474. The cubic root of 6143639 is about 183.1506915695.

The spelling of 6143639 in words is "six million, one hundred forty-three thousand, six hundred thirty-nine".