345909017 has 2 divisors, whose sum is σ = 345909018. Its totient is φ = 345909016.

The previous prime is 345909001. The next prime is 345909023. The reversal of 345909017 is 710909543.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321987136 + 23921881 = 17944^2 + 4891^2 .

It is an emirp because it is prime and its reverse (710909543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345909017 - 2⁴ = 345909001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345909077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172954508 + 172954509.

It is an arithmetic number, because the mean of its divisors is an integer number (172954509).

Almost surely, 2^345909017 is an apocalyptic number.

It is an amenable number.

345909017 is a deficient number, since it is larger than the sum of its proper divisors (1).

345909017 is an equidigital number, since it uses as much as digits as its factorization.

345909017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 345909017 is about 18598.6294387517. The cubic root of 345909017 is about 701.9733548597.

The spelling of 345909017 in words is "three hundred forty-five million, nine hundred nine thousand, seventeen".