3964463809 has 2 divisors, whose sum is σ = 3964463810. Its totient is φ = 3964463808.

The previous prime is 3964463807. The next prime is 3964464013. The reversal of 3964463809 is 9083644693.

3964463809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3816768400 + 147695409 = 61780^2 + 12153^2 .

It is a cyclic number.

It is not a de Polignac number, because 3964463809 - 2¹ = 3964463807 is a prime.

Together with 3964463807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3964463803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982231904 + 1982231905.

It is an arithmetic number, because the mean of its divisors is an integer number (1982231905).

Almost surely, 2^3964463809 is an apocalyptic number.

It is an amenable number.

3964463809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3964463809 is an equidigital number, since it uses as much as digits as its factorization.

3964463809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 52.

The square root of 3964463809 is about 62963.9881916640. The cubic root of 3964463809 is about 1582.6862130810.

The spelling of 3964463809 in words is "three billion, nine hundred sixty-four million, four hundred sixty-three thousand, eight hundred nine".