3999706147 has 2 divisors, whose sum is σ = 3999706148. Its totient is φ = 3999706146.

The previous prime is 3999706121. The next prime is 3999706153. The reversal of 3999706147 is 7416079993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3999706147 - 2¹⁹ = 3999181859 is a prime.

It is not a weakly prime, because it can be changed into another prime (3999706747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999853073 + 1999853074.

It is an arithmetic number, because the mean of its divisors is an integer number (1999853074).

Almost surely, 2^3999706147 is an apocalyptic number.

3999706147 is a deficient number, since it is larger than the sum of its proper divisors (1).

3999706147 is an equidigital number, since it uses as much as digits as its factorization.

3999706147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2571912, while the sum is 55.

The square root of 3999706147 is about 63243.2300487570. The cubic root of 3999706147 is about 1587.3621791362.

The spelling of 3999706147 in words is "three billion, nine hundred ninety-nine million, seven hundred six thousand, one hundred forty-seven".