340546979 has 2 divisors, whose sum is σ = 340546980. Its totient is φ = 340546978.

The previous prime is 340546967. The next prime is 340546981. The reversal of 340546979 is 979645043.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340546979 is a prime.

Together with 340546981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340546939) 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, 170273489 + 170273490.

It is an arithmetic number, because the mean of its divisors is an integer number (170273490).

Almost surely, 2^340546979 is an apocalyptic number.

340546979 is a deficient number, since it is larger than the sum of its proper divisors (1).

340546979 is an equidigital number, since it uses as much as digits as its factorization.

340546979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 340546979 is about 18453.9150046813. The cubic root of 340546979 is about 698.3272843040.

The spelling of 340546979 in words is "three hundred forty million, five hundred forty-six thousand, nine hundred seventy-nine".