3440066639 has 2 divisors, whose sum is σ = 3440066640. Its totient is φ = 3440066638.

The previous prime is 3440066627. The next prime is 3440066699. The reversal of 3440066639 is 9366600443.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3440066639 - 2²⁴ = 3423289423 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 3440066596 and 3440066605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3440066699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1720033319 + 1720033320.

It is an arithmetic number, because the mean of its divisors is an integer number (1720033320).

Almost surely, 2^3440066639 is an apocalyptic number.

3440066639 is a deficient number, since it is larger than the sum of its proper divisors (1).

3440066639 is an equidigital number, since it uses as much as digits as its factorization.

3440066639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 41.

The square root of 3440066639 is about 58652.0812844694. The cubic root of 3440066639 is about 1509.5782104819.

The spelling of 3440066639 in words is "three billion, four hundred forty million, sixty-six thousand, six hundred thirty-nine".