229940947 has 2 divisors, whose sum is σ = 229940948. Its totient is φ = 229940946.

The previous prime is 229940939. The next prime is 229940951. The reversal of 229940947 is 749049922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 229940947 - 2³ = 229940939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 229940897 and 229940906.

It is not a weakly prime, because it can be changed into another prime (229940927) 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, 114970473 + 114970474.

It is an arithmetic number, because the mean of its divisors is an integer number (114970474).

Almost surely, 2^229940947 is an apocalyptic number.

229940947 is a deficient number, since it is larger than the sum of its proper divisors (1).

229940947 is an equidigital number, since it uses as much as digits as its factorization.

229940947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 229940947 is about 15163.8038433633. The cubic root of 229940947 is about 612.6401263182.

The spelling of 229940947 in words is "two hundred twenty-nine million, nine hundred forty thousand, nine hundred forty-seven".