3993849511 has 4 divisors (see below), whose sum is σ = 4004974800. Its totient is φ = 3982724224.

The previous prime is 3993849481. The next prime is 3993849529. The reversal of 3993849511 is 1159483993.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3993849511 - 2²³ = 3985460903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993849551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5562106 + ... + 5562823.

It is an arithmetic number, because the mean of its divisors is an integer number (1001243700).

Almost surely, 2^3993849511 is an apocalyptic number.

3993849511 is a deficient number, since it is larger than the sum of its proper divisors (11125289).

3993849511 is a wasteful number, since it uses less digits than its factorization.

3993849511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11125288.

The product of its digits is 1049760, while the sum is 52.

The square root of 3993849511 is about 63196.9106127823. The cubic root of 3993849511 is about 1586.5870268788.

The spelling of 3993849511 in words is "three billion, nine hundred ninety-three million, eight hundred forty-nine thousand, five hundred eleven".