3996973609 has 2 divisors, whose sum is σ = 3996973610. Its totient is φ = 3996973608.

The previous prime is 3996973597. The next prime is 3996973663. The reversal of 3996973609 is 9063796993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3996768400 + 205209 = 63220^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 3996973609 - 2¹³ = 3996965417 is a prime.

It is not a weakly prime, because it can be changed into another prime (3996973679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998486804 + 1998486805.

It is an arithmetic number, because the mean of its divisors is an integer number (1998486805).

Almost surely, 2^3996973609 is an apocalyptic number.

It is an amenable number.

3996973609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996973609 is an equidigital number, since it uses as much as digits as its factorization.

3996973609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14880348, while the sum is 61.

The square root of 3996973609 is about 63221.6229544924. The cubic root of 3996973609 is about 1587.0006096052. Note that the first 3 decimals are identical.

The spelling of 3996973609 in words is "three billion, nine hundred ninety-six million, nine hundred seventy-three thousand, six hundred nine".