3993955791 has 8 divisors (see below), whose sum is σ = 6086027904. Its totient is φ = 2282260440.

The previous prime is 3993955783. The next prime is 3993955807. The reversal of 3993955791 is 1975593993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3993955791 - 2³ = 3993955783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993955751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95094165 + ... + 95094206.

It is an arithmetic number, because the mean of its divisors is an integer number (760753488).

Almost surely, 2^3993955791 is an apocalyptic number.

3993955791 is a deficient number, since it is larger than the sum of its proper divisors (2092072113).

3993955791 is a wasteful number, since it uses less digits than its factorization.

3993955791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190188381.

The product of its digits is 10333575, while the sum is 60.

The square root of 3993955791 is about 63197.7514710769. The cubic root of 3993955791 is about 1586.6011002661.

The spelling of 3993955791 in words is "three billion, nine hundred ninety-three million, nine hundred fifty-five thousand, seven hundred ninety-one".