4478420291 has 2 divisors, whose sum is σ = 4478420292. Its totient is φ = 4478420290.

The previous prime is 4478420267. The next prime is 4478420369. The reversal of 4478420291 is 1920248744.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4478420291 - 2¹⁴ = 4478403907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (4478425291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2239210145 + 2239210146.

It is an arithmetic number, because the mean of its divisors is an integer number (2239210146).

Almost surely, 2^4478420291 is an apocalyptic number.

4478420291 is a deficient number, since it is larger than the sum of its proper divisors (1).

4478420291 is an equidigital number, since it uses as much as digits as its factorization.

4478420291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 4478420291 is about 66921.0003735748. Note that the first 3 decimals coincide. The cubic root of 4478420291 is about 1648.3203343028.

The spelling of 4478420291 in words is "four billion, four hundred seventy-eight million, four hundred twenty thousand, two hundred ninety-one".