234509993 has 2 divisors, whose sum is σ = 234509994. Its totient is φ = 234509992.

The previous prime is 234509987. The next prime is 234510041. The reversal of 234509993 is 399905432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165071104 + 69438889 = 12848^2 + 8333^2 .

It is a cyclic number.

It is not a de Polignac number, because 234509993 - 2¹² = 234505897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (234509923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117254996 + 117254997.

It is an arithmetic number, because the mean of its divisors is an integer number (117254997).

Almost surely, 2^234509993 is an apocalyptic number.

It is an amenable number.

234509993 is a deficient number, since it is larger than the sum of its proper divisors (1).

234509993 is an equidigital number, since it uses as much as digits as its factorization.

234509993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 234509993 is about 15313.7191106537. The cubic root of 234509993 is about 616.6713679051.

The spelling of 234509993 in words is "two hundred thirty-four million, five hundred nine thousand, nine hundred ninety-three".