345998293 has 2 divisors, whose sum is σ = 345998294. Its totient is φ = 345998292.

The previous prime is 345998287. The next prime is 345998309. The reversal of 345998293 is 392899543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 332624644 + 13373649 = 18238^2 + 3657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345998293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345998293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345998273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172999146 + 172999147.

It is an arithmetic number, because the mean of its divisors is an integer number (172999147).

Almost surely, 2^345998293 is an apocalyptic number.

It is an amenable number.

345998293 is a deficient number, since it is larger than the sum of its proper divisors (1).

345998293 is an equidigital number, since it uses as much as digits as its factorization.

345998293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 52.

The square root of 345998293 is about 18601.0293532374. The cubic root of 345998293 is about 702.0337406639.

The spelling of 345998293 in words is "three hundred forty-five million, nine hundred ninety-eight thousand, two hundred ninety-three".