3983993893 has 4 divisors (see below), whose sum is σ = 4346175168. Its totient is φ = 3621812620.

The previous prime is 3983993873. The next prime is 3983993933.

3983993893 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3983993893 - 2²¹ = 3981896741 is a prime.

It is a super-2 number, since 2×3983993893² = 31744414678922590898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3983993863) 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 in 3 ways as a sum of consecutive naturals, for example, 181090621 + ... + 181090642.

It is an arithmetic number, because the mean of its divisors is an integer number (1086543792).

Almost surely, 2^3983993893 is an apocalyptic number.

It is an amenable number.

3983993893 is a deficient number, since it is larger than the sum of its proper divisors (362181275).

3983993893 is a wasteful number, since it uses less digits than its factorization.

3983993893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362181274.

The product of its digits is 34012224, while the sum is 64.

The square root of 3983993893 is about 63118.8869752945. The cubic root of 3983993893 is about 1585.2808788812.

The spelling of 3983993893 in words is "three billion, nine hundred eighty-three million, nine hundred ninety-three thousand, eight hundred ninety-three".