2847434021 has 4 divisors (see below), whose sum is σ = 2850002700. Its totient is φ = 2844865344.

The previous prime is 2847433997. The next prime is 2847434053. The reversal of 2847434021 is 1204347482.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1450543396 + 1396890625 = 38086^2 + 37375^2 .

It is a cyclic number.

It is not a de Polignac number, because 2847434021 - 2³⁰ = 1773692197 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 (2847434081) 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, 1282676 + ... + 1284893.

It is an arithmetic number, because the mean of its divisors is an integer number (712500675).

Almost surely, 2^2847434021 is an apocalyptic number.

It is an amenable number.

2847434021 is a deficient number, since it is larger than the sum of its proper divisors (2568679).

2847434021 is a wasteful number, since it uses less digits than its factorization.

2847434021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568678.

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 2847434021 is about 53361.3532530801. The cubic root of 2847434021 is about 1417.3743089304.

The spelling of 2847434021 in words is "two billion, eight hundred forty-seven million, four hundred thirty-four thousand, twenty-one".