3847728824349 has 16 divisors (see below), whose sum is σ = 5142767244480. Its totient is φ = 2558927105280.

The previous prime is 3847728824327. The next prime is 3847728824351. The reversal of 3847728824349 is 9434288277483.

It is not a de Polignac number, because 3847728824349 - 2¹⁵ = 3847728791581 is a prime.

It is a super-2 number, since 2×3847728824349² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3847728824309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2036389 + ... + 3441269.

It is an arithmetic number, because the mean of its divisors is an integer number (321422952780).

Almost surely, 2^{3847728824349} is an apocalyptic number.

It is an amenable number.

3847728824349 is a deficient number, since it is larger than the sum of its proper divisors (1295038420131).

3847728824349 is a wasteful number, since it uses less digits than its factorization.

3847728824349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407100.

The product of its digits is 520224768, while the sum is 69.

The spelling of 3847728824349 in words is "three trillion, eight hundred forty-seven billion, seven hundred twenty-eight million, eight hundred twenty-four thousand, three hundred forty-nine".