2847893221 has 2 divisors, whose sum is σ = 2847893222. Its totient is φ = 2847893220.

The previous prime is 2847893207. The next prime is 2847893239. The reversal of 2847893221 is 1223987482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2027700900 + 820192321 = 45030^2 + 28639^2 .

It is a cyclic number.

It is not a de Polignac number, because 2847893221 - 2⁷ = 2847893093 is a prime.

It is a super-2 number, since 2×2847893221² = 16220991596435509682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2847893291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1423946610 + 1423946611.

It is an arithmetic number, because the mean of its divisors is an integer number (1423946611).

Almost surely, 2^2847893221 is an apocalyptic number.

It is an amenable number.

2847893221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2847893221 is an equidigital number, since it uses as much as digits as its factorization.

2847893221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The square root of 2847893221 is about 53365.6558190752. The cubic root of 2847893221 is about 1417.4504972100.

The spelling of 2847893221 in words is "two billion, eight hundred forty-seven million, eight hundred ninety-three thousand, two hundred twenty-one".