229731739 has 2 divisors, whose sum is σ = 229731740. Its totient is φ = 229731738.

The previous prime is 229731721. The next prime is 229731767. The reversal of 229731739 is 937137922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 229731739 - 2⁷ = 229731611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 229731695 and 229731704.

It is not a weakly prime, because it can be changed into another prime (220731739) 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, 114865869 + 114865870.

It is an arithmetic number, because the mean of its divisors is an integer number (114865870).

Almost surely, 2^229731739 is an apocalyptic number.

229731739 is a deficient number, since it is larger than the sum of its proper divisors (1).

229731739 is an equidigital number, since it uses as much as digits as its factorization.

229731739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 43.

The square root of 229731739 is about 15156.9040044463. The cubic root of 229731739 is about 612.4542697497.

The spelling of 229731739 in words is "two hundred twenty-nine million, seven hundred thirty-one thousand, seven hundred thirty-nine".