345864229 has 2 divisors, whose sum is σ = 345864230. Its totient is φ = 345864228.

The previous prime is 345864227. The next prime is 345864263. The reversal of 345864229 is 922468543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178756900 + 167107329 = 13370^2 + 12927^2 .

It is a cyclic number.

It is not a de Polignac number, because 345864229 - 2¹ = 345864227 is a prime.

Together with 345864227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345864221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172932114 + 172932115.

It is an arithmetic number, because the mean of its divisors is an integer number (172932115).

Almost surely, 2^345864229 is an apocalyptic number.

It is an amenable number.

345864229 is a deficient number, since it is larger than the sum of its proper divisors (1).

345864229 is an equidigital number, since it uses as much as digits as its factorization.

345864229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 43.

The square root of 345864229 is about 18597.4253325561. The cubic root of 345864229 is about 701.9430565846.

The spelling of 345864229 in words is "three hundred forty-five million, eight hundred sixty-four thousand, two hundred twenty-nine".