230439997 has 2 divisors, whose sum is σ = 230439998. Its totient is φ = 230439996.

The previous prime is 230439991. The next prime is 230440009. The reversal of 230439997 is 799934032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140683321 + 89756676 = 11861^2 + 9474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230439997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230439991) 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, 115219998 + 115219999.

It is an arithmetic number, because the mean of its divisors is an integer number (115219999).

Almost surely, 2^230439997 is an apocalyptic number.

It is an amenable number.

230439997 is a deficient number, since it is larger than the sum of its proper divisors (1).

230439997 is an equidigital number, since it uses as much as digits as its factorization.

230439997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 46.

The square root of 230439997 is about 15180.2502285041. The cubic root of 230439997 is about 613.0830184900.

The spelling of 230439997 in words is "two hundred thirty million, four hundred thirty-nine thousand, nine hundred ninety-seven".