4306847921 has 2 divisors, whose sum is σ = 4306847922. Its totient is φ = 4306847920.

The previous prime is 4306847917. The next prime is 4306847927. The reversal of 4306847921 is 1297486034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4237359025 + 69488896 = 65095^2 + 8336^2 .

It is a cyclic number.

It is not a de Polignac number, because 4306847921 - 2² = 4306847917 is a prime.

It is not a weakly prime, because it can be changed into another prime (4306847927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2153423960 + 2153423961.

It is an arithmetic number, because the mean of its divisors is an integer number (2153423961).

Almost surely, 2^4306847921 is an apocalyptic number.

It is an amenable number.

4306847921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4306847921 is an equidigital number, since it uses as much as digits as its factorization.

4306847921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 4306847921 is about 65626.5793790900. The cubic root of 4306847921 is about 1626.9961011755.

The spelling of 4306847921 in words is "four billion, three hundred six million, eight hundred forty-seven thousand, nine hundred twenty-one".