4259478409 has 2 divisors, whose sum is σ = 4259478410. Its totient is φ = 4259478408.

The previous prime is 4259478407. The next prime is 4259478437. The reversal of 4259478409 is 9048749524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2847823225 + 1411655184 = 53365^2 + 37572^2 .

It is a cyclic number.

It is not a de Polignac number, because 4259478409 - 2¹ = 4259478407 is a prime.

Together with 4259478407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4259478407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2129739204 + 2129739205.

It is an arithmetic number, because the mean of its divisors is an integer number (2129739205).

Almost surely, 2^4259478409 is an apocalyptic number.

It is an amenable number.

4259478409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4259478409 is an equidigital number, since it uses as much as digits as its factorization.

4259478409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The square root of 4259478409 is about 65264.6796437399. The cubic root of 4259478409 is about 1621.0091777619.

The spelling of 4259478409 in words is "four billion, two hundred fifty-nine million, four hundred seventy-eight thousand, four hundred nine".