3440340121 has 2 divisors, whose sum is σ = 3440340122. Its totient is φ = 3440340120.

The previous prime is 3440340109. The next prime is 3440340139. The reversal of 3440340121 is 1210430443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1735888896 + 1704451225 = 41664^2 + 41285^2 .

It is a cyclic number.

It is not a de Polignac number, because 3440340121 - 2²⁵ = 3406785689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3440340092 and 3440340101.

It is not a weakly prime, because it can be changed into another prime (3440340181) 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, 1720170060 + 1720170061.

It is an arithmetic number, because the mean of its divisors is an integer number (1720170061).

Almost surely, 2^3440340121 is an apocalyptic number.

It is an amenable number.

3440340121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3440340121 is an equidigital number, since it uses as much as digits as its factorization.

3440340121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 3440340121 is about 58654.4126302531. The cubic root of 3440340121 is about 1509.6182127620.

Adding to 3440340121 its reverse (1210430443), we get a palindrome (4650770564).

The spelling of 3440340121 in words is "three billion, four hundred forty million, three hundred forty thousand, one hundred twenty-one".