340397773 has 2 divisors, whose sum is σ = 340397774. Its totient is φ = 340397772.

The previous prime is 340397693. The next prime is 340397779. The reversal of 340397773 is 377793043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277322409 + 63075364 = 16653^2 + 7942^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340397773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340397779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170198886 + 170198887.

It is an arithmetic number, because the mean of its divisors is an integer number (170198887).

Almost surely, 2^340397773 is an apocalyptic number.

It is an amenable number.

340397773 is a deficient number, since it is larger than the sum of its proper divisors (1).

340397773 is an equidigital number, since it uses as much as digits as its factorization.

340397773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 333396, while the sum is 43.

The square root of 340397773 is about 18449.8718965742. The cubic root of 340397773 is about 698.2252818901.

The spelling of 340397773 in words is "three hundred forty million, three hundred ninety-seven thousand, seven hundred seventy-three".