3856340447 has 2 divisors, whose sum is σ = 3856340448. Its totient is φ = 3856340446.

The previous prime is 3856340353. The next prime is 3856340461. The reversal of 3856340447 is 7440436583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3856340447 - 2¹⁰ = 3856339423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3856340398 and 3856340407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3856340347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1928170223 + 1928170224.

It is an arithmetic number, because the mean of its divisors is an integer number (1928170224).

Almost surely, 2^3856340447 is an apocalyptic number.

3856340447 is a deficient number, since it is larger than the sum of its proper divisors (1).

3856340447 is an equidigital number, since it uses as much as digits as its factorization.

3856340447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 44.

The square root of 3856340447 is about 62099.4399894234. The cubic root of 3856340447 is about 1568.1651176629.

The spelling of 3856340447 in words is "three billion, eight hundred fifty-six million, three hundred forty thousand, four hundred forty-seven".