28943433983 has 2 divisors, whose sum is σ = 28943433984. Its totient is φ = 28943433982.

The previous prime is 28943433971. The next prime is 28943434007. The reversal of 28943433983 is 38933434982.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28943433983 - 2¹⁸ = 28943171839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28943432983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14471716991 + 14471716992.

It is an arithmetic number, because the mean of its divisors is an integer number (14471716992).

Almost surely, 2^28943433983 is an apocalyptic number.

28943433983 is a deficient number, since it is larger than the sum of its proper divisors (1).

28943433983 is an equidigital number, since it uses as much as digits as its factorization.

28943433983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13436928, while the sum is 56.

Subtracting 28943433983 from its reverse (38933434982), we obtain a palindrome (9990000999).

The spelling of 28943433983 in words is "twenty-eight billion, nine hundred forty-three million, four hundred thirty-three thousand, nine hundred eighty-three".