3445639 has 2 divisors, whose sum is σ = 3445640. Its totient is φ = 3445638.

The previous prime is 3445627. The next prime is 3445643. The reversal of 3445639 is 9365443.

It is a happy number.

3445639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3445639 - 2⁷ = 3445511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3445649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1722819 + 1722820.

It is an arithmetic number, because the mean of its divisors is an integer number (1722820).

Almost surely, 2^3445639 is an apocalyptic number.

3445639 is a deficient number, since it is larger than the sum of its proper divisors (1).

3445639 is an equidigital number, since it uses as much as digits as its factorization.

3445639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

The square root of 3445639 is about 1856.2432491460. The cubic root of 3445639 is about 151.0392862999.

The spelling of 3445639 in words is "three million, four hundred forty-five thousand, six hundred thirty-nine".