345995779 has 2 divisors, whose sum is σ = 345995780. Its totient is φ = 345995778.

The previous prime is 345995711. The next prime is 345995807. The reversal of 345995779 is 977599543.

It is a strong prime.

It is an emirp because it is prime and its reverse (977599543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345995779 - 2⁹ = 345995267 is a prime.

It is not a weakly prime, because it can be changed into another prime (345995179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172997889 + 172997890.

It is an arithmetic number, because the mean of its divisors is an integer number (172997890).

Almost surely, 2^345995779 is an apocalyptic number.

345995779 is a deficient number, since it is larger than the sum of its proper divisors (1).

345995779 is an equidigital number, since it uses as much as digits as its factorization.

345995779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10716300, while the sum is 58.

The square root of 345995779 is about 18600.9617762093. The cubic root of 345995779 is about 702.0320403500.

The spelling of 345995779 in words is "three hundred forty-five million, nine hundred ninety-five thousand, seven hundred seventy-nine".