345434489 has 2 divisors, whose sum is σ = 345434490. Its totient is φ = 345434488.

The previous prime is 345434477. The next prime is 345434503. The reversal of 345434489 is 984434543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345216400 + 218089 = 18580^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 345434489 - 2⁴ = 345434473 is a prime.

It is a super-2 number, since 2×345434489² = 238649972381382242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345434429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172717244 + 172717245.

It is an arithmetic number, because the mean of its divisors is an integer number (172717245).

Almost surely, 2^345434489 is an apocalyptic number.

It is an amenable number.

345434489 is a deficient number, since it is larger than the sum of its proper divisors (1).

345434489 is an equidigital number, since it uses as much as digits as its factorization.

345434489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 44.

The square root of 345434489 is about 18585.8679915682. The cubic root of 345434489 is about 701.6522121763.

The spelling of 345434489 in words is "three hundred forty-five million, four hundred thirty-four thousand, four hundred eighty-nine".