229399397 has 2 divisors, whose sum is σ = 229399398. Its totient is φ = 229399396.

The previous prime is 229399363. The next prime is 229399403. The reversal of 229399397 is 793993922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219069601 + 10329796 = 14801^2 + 3214^2 .

It is a cyclic number.

It is not a de Polignac number, because 229399397 - 2²² = 225205093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229399097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114699698 + 114699699.

It is an arithmetic number, because the mean of its divisors is an integer number (114699699).

Almost surely, 2^229399397 is an apocalyptic number.

It is an amenable number.

229399397 is a deficient number, since it is larger than the sum of its proper divisors (1).

229399397 is an equidigital number, since it uses as much as digits as its factorization.

229399397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1653372, while the sum is 53.

The square root of 229399397 is about 15145.9366498081. The cubic root of 229399397 is about 612.1587910472.

The spelling of 229399397 in words is "two hundred twenty-nine million, three hundred ninety-nine thousand, three hundred ninety-seven".