43029001993 has 2 divisors, whose sum is σ = 43029001994. Its totient is φ = 43029001992.

The previous prime is 43029001991. The next prime is 43029002063. The reversal of 43029001993 is 39910092034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22237669129 + 20791332864 = 149123^2 + 144192^2 .

It is a cyclic number.

It is not a de Polignac number, because 43029001993 - 2¹ = 43029001991 is a prime.

Together with 43029001991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (43029001991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21514500996 + 21514500997.

It is an arithmetic number, because the mean of its divisors is an integer number (21514500997).

Almost surely, 2^43029001993 is an apocalyptic number.

It is an amenable number.

43029001993 is a deficient number, since it is larger than the sum of its proper divisors (1).

43029001993 is an equidigital number, since it uses as much as digits as its factorization.

43029001993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 40.

The spelling of 43029001993 in words is "forty-three billion, twenty-nine million, one thousand, nine hundred ninety-three".