3847274333809 has 3 divisors (see below), whose sum is σ = 3847276295257. Its totient is φ = 3847272372362.

The previous prime is 3847274333807. The next prime is 3847274333821. The reversal of 3847274333809 is 9083334727483.

It is a happy number.

The square root of 3847274333809 is 1961447.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 3847274333809 - 2¹ = 3847274333807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3847274333807) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 980724 + ... + 2942170.

Almost surely, 2^{3847274333809} is an apocalyptic number.

3847274333809 is the 1961447-th square number.

3847274333809 is the 980724-th centered octagonal number.

It is an amenable number.

3847274333809 is a deficient number, since it is larger than the sum of its proper divisors (1961448).

3847274333809 is an frugal number, since it uses more digits than its factorization.

3847274333809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922894 (or 1961447 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 61.

The spelling of 3847274333809 in words is "three trillion, eight hundred forty-seven billion, two hundred seventy-four million, three hundred thirty-three thousand, eight hundred nine".