3996047509 has 2 divisors, whose sum is σ = 3996047510. Its totient is φ = 3996047508.

The previous prime is 3996047423. The next prime is 3996047537. The reversal of 3996047509 is 9057406993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3163725009 + 832322500 = 56247^2 + 28850^2 .

It is a cyclic number.

It is not a de Polignac number, because 3996047509 - 2⁷ = 3996047381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3996047609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998023754 + 1998023755.

It is an arithmetic number, because the mean of its divisors is an integer number (1998023755).

Almost surely, 2^3996047509 is an apocalyptic number.

It is an amenable number.

3996047509 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996047509 is an equidigital number, since it uses as much as digits as its factorization.

3996047509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The square root of 3996047509 is about 63214.2982955597. The cubic root of 3996047509 is about 1586.8780306297.

The spelling of 3996047509 in words is "three billion, nine hundred ninety-six million, forty-seven thousand, five hundred nine".