4220989291 has 2 divisors, whose sum is σ = 4220989292. Its totient is φ = 4220989290.

The previous prime is 4220989261. The next prime is 4220989303. The reversal of 4220989291 is 1929890224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4220989291 - 2⁷ = 4220989163 is a prime.

It is not a weakly prime, because it can be changed into another prime (4220989261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110494645 + 2110494646.

It is an arithmetic number, because the mean of its divisors is an integer number (2110494646).

Almost surely, 2^4220989291 is an apocalyptic number.

4220989291 is a deficient number, since it is larger than the sum of its proper divisors (1).

4220989291 is an equidigital number, since it uses as much as digits as its factorization.

4220989291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 4220989291 is about 64969.1410671251. The cubic root of 4220989291 is about 1616.1118576942. Note that the first 3 decimals are identical.

The spelling of 4220989291 in words is "four billion, two hundred twenty million, nine hundred eighty-nine thousand, two hundred ninety-one".