3805345447 has 2 divisors, whose sum is σ = 3805345448. Its totient is φ = 3805345446.

The previous prime is 3805345409. The next prime is 3805345451. The reversal of 3805345447 is 7445435083.

It is a strong prime.

It is an emirp because it is prime and its reverse (7445435083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3805345447 - 2⁷ = 3805345319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3805345457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1902672723 + 1902672724.

It is an arithmetic number, because the mean of its divisors is an integer number (1902672724).

Almost surely, 2^3805345447 is an apocalyptic number.

3805345447 is a deficient number, since it is larger than the sum of its proper divisors (1).

3805345447 is an equidigital number, since it uses as much as digits as its factorization.

3805345447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 43.

The square root of 3805345447 is about 61687.4820932092. The cubic root of 3805345447 is about 1561.2221202102. Note that the first 3 decimals are identical.

The spelling of 3805345447 in words is "three billion, eight hundred five million, three hundred forty-five thousand, four hundred forty-seven".