3981347033 has 4 divisors (see below), whose sum is σ = 3981554640. Its totient is φ = 3981139428.

The previous prime is 3981347023. The next prime is 3981347047. The reversal of 3981347033 is 3307431893.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3307431893 = 643 ⋅5143751.

It is a cyclic number.

It is not a de Polignac number, because 3981347033 - 2¹⁰ = 3981346009 is a prime.

It is a super-2 number, since 2×3981347033² = 31702248394355806178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3981347023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71735 + ... + 114492.

It is an arithmetic number, because the mean of its divisors is an integer number (995388660).

Almost surely, 2^3981347033 is an apocalyptic number.

It is an amenable number.

3981347033 is a deficient number, since it is larger than the sum of its proper divisors (207607).

3981347033 is a wasteful number, since it uses less digits than its factorization.

3981347033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207606.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 3981347033 is about 63097.9162334225. The cubic root of 3981347033 is about 1584.9297282316.

It can be divided in two parts, 398 and 1347033, that added together give a palindrome (1347431).

The spelling of 3981347033 in words is "three billion, nine hundred eighty-one million, three hundred forty-seven thousand, thirty-three".