340645829 has 2 divisors, whose sum is σ = 340645830. Its totient is φ = 340645828.

The previous prime is 340645817. The next prime is 340645841. The reversal of 340645829 is 928546043.

It is a balanced prime because it is at equal distance from previous prime (340645817) and next prime (340645841).

It can be written as a sum of positive squares in only one way, i.e., 331312804 + 9333025 = 18202^2 + 3055^2 .

It is a cyclic number.

It is not a de Polignac number, because 340645829 - 2¹⁶ = 340580293 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_18327695 and since 340645829 and 18327695 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340647829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170322914 + 170322915.

It is an arithmetic number, because the mean of its divisors is an integer number (170322915).

Almost surely, 2^340645829 is an apocalyptic number.

It is an amenable number.

340645829 is a deficient number, since it is larger than the sum of its proper divisors (1).

340645829 is an equidigital number, since it uses as much as digits as its factorization.

340645829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 340645829 is about 18456.5931038207. The cubic root of 340645829 is about 698.3948451970.

It can be divided in two parts, 34064 and 5829, that added together give a palindrome (39893).

The spelling of 340645829 in words is "three hundred forty million, six hundred forty-five thousand, eight hundred twenty-nine".