63944143 has 4 divisors (see below), whose sum is σ = 64070280. Its totient is φ = 63818008.

The previous prime is 63944099. The next prime is 63944147. The reversal of 63944143 is 34144936.

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 63944143 - 2¹³ = 63935951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63944099 and 63944108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63944147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62305 + ... + 63322.

It is an arithmetic number, because the mean of its divisors is an integer number (16017570).

Almost surely, 2^63944143 is an apocalyptic number.

63944143 is a deficient number, since it is larger than the sum of its proper divisors (126137).

63944143 is a wasteful number, since it uses less digits than its factorization.

63944143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126136.

The product of its digits is 31104, while the sum is 34.

The square root of 63944143 is about 7996.5081754476. The cubic root of 63944143 is about 399.8835973794.

The spelling of 63944143 in words is "sixty-three million, nine hundred forty-four thousand, one hundred forty-three".