3440697809 has 2 divisors, whose sum is σ = 3440697810. Its totient is φ = 3440697808.

The previous prime is 3440697797. The next prime is 3440697829. The reversal of 3440697809 is 9087960443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3425526784 + 15171025 = 58528^2 + 3895^2 .

It is a cyclic number.

It is not a de Polignac number, because 3440697809 - 2⁸ = 3440697553 is a prime.

It is not a weakly prime, because it can be changed into another prime (3440697829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1720348904 + 1720348905.

It is an arithmetic number, because the mean of its divisors is an integer number (1720348905).

Almost surely, 2^3440697809 is an apocalyptic number.

It is an amenable number.

3440697809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3440697809 is an equidigital number, since it uses as much as digits as its factorization.

3440697809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 3440697809 is about 58657.4616651624. The cubic root of 3440697809 is about 1509.6705286754.

The spelling of 3440697809 in words is "three billion, four hundred forty million, six hundred ninety-seven thousand, eight hundred nine".