340845977 has 2 divisors, whose sum is σ = 340845978. Its totient is φ = 340845976.

The previous prime is 340845949. The next prime is 340845983. The reversal of 340845977 is 779548043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188348176 + 152497801 = 13724^2 + 12349^2 .

It is a cyclic number.

It is not a de Polignac number, because 340845977 - 2¹⁰ = 340844953 is a prime.

It is not a weakly prime, because it can be changed into another prime (340845277) 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, 170422988 + 170422989.

It is an arithmetic number, because the mean of its divisors is an integer number (170422989).

Almost surely, 2^340845977 is an apocalyptic number.

It is an amenable number.

340845977 is a deficient number, since it is larger than the sum of its proper divisors (1).

340845977 is an equidigital number, since it uses as much as digits as its factorization.

340845977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 340845977 is about 18462.0144350501. The cubic root of 340845977 is about 698.5316001019.

The spelling of 340845977 in words is "three hundred forty million, eight hundred forty-five thousand, nine hundred seventy-seven".