340439413 has 2 divisors, whose sum is σ = 340439414. Its totient is φ = 340439412.

The previous prime is 340439339. The next prime is 340439423. The reversal of 340439413 is 314934043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283013329 + 57426084 = 16823^2 + 7578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340439413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340439423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170219706 + 170219707.

It is an arithmetic number, because the mean of its divisors is an integer number (170219707).

Almost surely, 2^340439413 is an apocalyptic number.

It is an amenable number.

340439413 is a deficient number, since it is larger than the sum of its proper divisors (1).

340439413 is an equidigital number, since it uses as much as digits as its factorization.

340439413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 340439413 is about 18451.0003251856. Note that the first 3 decimals coincide. The cubic root of 340439413 is about 698.2537514412.

The spelling of 340439413 in words is "three hundred forty million, four hundred thirty-nine thousand, four hundred thirteen".