345729269 has 2 divisors, whose sum is σ = 345729270. Its totient is φ = 345729268.

The previous prime is 345729233. The next prime is 345729277. The reversal of 345729269 is 962927543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341769169 + 3960100 = 18487^2 + 1990^2 .

It is a cyclic number.

It is not a de Polignac number, because 345729269 - 2¹² = 345725173 is a prime.

It is a super-2 number, since 2×345729269² = 239057454886548722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345729299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172864634 + 172864635.

It is an arithmetic number, because the mean of its divisors is an integer number (172864635).

Almost surely, 2^345729269 is an apocalyptic number.

It is an amenable number.

345729269 is a deficient number, since it is larger than the sum of its proper divisors (1).

345729269 is an equidigital number, since it uses as much as digits as its factorization.

345729269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 47.

The square root of 345729269 is about 18593.7965192695. The cubic root of 345729269 is about 701.8517427571.

The spelling of 345729269 in words is "three hundred forty-five million, seven hundred twenty-nine thousand, two hundred sixty-nine".