340734869 has 2 divisors, whose sum is σ = 340734870. Its totient is φ = 340734868.

The previous prime is 340734817. The next prime is 340734871. The reversal of 340734869 is 968437043.

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., 221116900 + 119617969 = 14870^2 + 10937^2 .

It is a cyclic number.

It is not a de Polignac number, because 340734869 - 2⁸ = 340734613 is a prime.

It is a super-2 number, since 2×340734869² = 232200501904894322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 340734871, it forms a pair of twin primes.

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 (340734899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170367434 + 170367435.

It is an arithmetic number, because the mean of its divisors is an integer number (170367435).

Almost surely, 2^340734869 is an apocalyptic number.

It is an amenable number.

340734869 is a deficient number, since it is larger than the sum of its proper divisors (1).

340734869 is an equidigital number, since it uses as much as digits as its factorization.

340734869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 340734869 is about 18459.0050923662. The cubic root of 340734869 is about 698.4556900731.

The spelling of 340734869 in words is "three hundred forty million, seven hundred thirty-four thousand, eight hundred sixty-nine".