229279691 has 2 divisors, whose sum is σ = 229279692. Its totient is φ = 229279690.

The previous prime is 229279681. The next prime is 229279711. The reversal of 229279691 is 196972922.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229279691 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229279601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114639845 + 114639846.

It is an arithmetic number, because the mean of its divisors is an integer number (114639846).

Almost surely, 2^229279691 is an apocalyptic number.

229279691 is a deficient number, since it is larger than the sum of its proper divisors (1).

229279691 is an equidigital number, since it uses as much as digits as its factorization.

229279691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 47.

The square root of 229279691 is about 15141.9843811833. The cubic root of 229279691 is about 612.0522929030.

The spelling of 229279691 in words is "two hundred twenty-nine million, two hundred seventy-nine thousand, six hundred ninety-one".