3993849551 has 2 divisors, whose sum is σ = 3993849552. Its totient is φ = 3993849550.

The previous prime is 3993849547. The next prime is 3993849569. The reversal of 3993849551 is 1559483993.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3993849551 - 2² = 3993849547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3993849451) 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, 1996924775 + 1996924776.

It is an arithmetic number, because the mean of its divisors is an integer number (1996924776).

Almost surely, 2^3993849551 is an apocalyptic number.

3993849551 is a deficient number, since it is larger than the sum of its proper divisors (1).

3993849551 is an equidigital number, since it uses as much as digits as its factorization.

3993849551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5248800, while the sum is 56.

The square root of 3993849551 is about 63196.9109292535. The cubic root of 3993849551 is about 1586.5870321755.

The spelling of 3993849551 in words is "three billion, nine hundred ninety-three million, eight hundred forty-nine thousand, five hundred fifty-one".