229931479 has 2 divisors, whose sum is σ = 229931480. Its totient is φ = 229931478.

The previous prime is 229931389. The next prime is 229931501. The reversal of 229931479 is 974139922.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229931479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229931279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114965739 + 114965740.

It is an arithmetic number, because the mean of its divisors is an integer number (114965740).

Almost surely, 2^229931479 is an apocalyptic number.

229931479 is a deficient number, since it is larger than the sum of its proper divisors (1).

229931479 is an equidigital number, since it uses as much as digits as its factorization.

229931479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 229931479 is about 15163.4916493531. The cubic root of 229931479 is about 612.6317175559.

The spelling of 229931479 in words is "two hundred twenty-nine million, nine hundred thirty-one thousand, four hundred seventy-nine".