340207849 has 4 divisors (see below), whose sum is σ = 340295764. Its totient is φ = 340119936.

The previous prime is 340207831. The next prime is 340207909. The reversal of 340207849 is 948702043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948702043 = 241 ⋅3936523.

It can be written as a sum of positive squares in 2 ways, for example, as 161798400 + 178409449 = 12720^2 + 13357^2 .

It is a cyclic number.

It is not a de Polignac number, because 340207849 - 2⁹ = 340207337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340204849) 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 in 3 ways as a sum of consecutive naturals, for example, 37872 + ... + 45985.

It is an arithmetic number, because the mean of its divisors is an integer number (85073941).

Almost surely, 2^340207849 is an apocalyptic number.

It is an amenable number.

340207849 is a deficient number, since it is larger than the sum of its proper divisors (87915).

340207849 is an equidigital number, since it uses as much as digits as its factorization.

340207849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87914.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 340207849 is about 18444.7241508243. The cubic root of 340207849 is about 698.0954001070.

It can be divided in two parts, 340207 and 849, that added together give a square (341056 = 584²).

The spelling of 340207849 in words is "three hundred forty million, two hundred seven thousand, eight hundred forty-nine".