3909468947 has 2 divisors, whose sum is σ = 3909468948. Its totient is φ = 3909468946.

The previous prime is 3909468919. The next prime is 3909469007. The reversal of 3909468947 is 7498649093.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3909468947 - 2¹⁸ = 3909206803 is a prime.

It is not a weakly prime, because it can be changed into another prime (3909468247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954734473 + 1954734474.

It is an arithmetic number, because the mean of its divisors is an integer number (1954734474).

Almost surely, 2^3909468947 is an apocalyptic number.

3909468947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3909468947 is an equidigital number, since it uses as much as digits as its factorization.

3909468947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The square root of 3909468947 is about 62525.7462730354. The cubic root of 3909468947 is about 1575.3337929640. Note that the first 3 decimals are identical.

The spelling of 3909468947 in words is "three billion, nine hundred nine million, four hundred sixty-eight thousand, nine hundred forty-seven".