340756399 has 2 divisors, whose sum is σ = 340756400. Its totient is φ = 340756398.

The previous prime is 340756391. The next prime is 340756457. The reversal of 340756399 is 993657043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340756399 - 2³ = 340756391 is a prime.

It is a super-2 number, since 2×340756399² = 232229846918894402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340756391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170378199 + 170378200.

It is an arithmetic number, because the mean of its divisors is an integer number (170378200).

Almost surely, 2^340756399 is an apocalyptic number.

340756399 is a deficient number, since it is larger than the sum of its proper divisors (1).

340756399 is an equidigital number, since it uses as much as digits as its factorization.

340756399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 46.

The square root of 340756399 is about 18459.5882673477. The cubic root of 340756399 is about 698.4704008601.

The spelling of 340756399 in words is "three hundred forty million, seven hundred fifty-six thousand, three hundred ninety-nine".