340394479 has 2 divisors, whose sum is σ = 340394480. Its totient is φ = 340394478.

The previous prime is 340394449. The next prime is 340394501. The reversal of 340394479 is 974493043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340394479 - 2²³ = 332005871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340394449) 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, 170197239 + 170197240.

It is an arithmetic number, because the mean of its divisors is an integer number (170197240).

Almost surely, 2^340394479 is an apocalyptic number.

340394479 is a deficient number, since it is larger than the sum of its proper divisors (1).

340394479 is an equidigital number, since it uses as much as digits as its factorization.

340394479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 340394479 is about 18449.7826274458. The cubic root of 340394479 is about 698.2230296609.

The spelling of 340394479 in words is "three hundred forty million, three hundred ninety-four thousand, four hundred seventy-nine".