6430849 has 2 divisors, whose sum is σ = 6430850. Its totient is φ = 6430848.

The previous prime is 6430847. The next prime is 6430883. The reversal of 6430849 is 9480346.

It is an a-pointer prime, because the next prime (6430883) can be obtained adding 6430849 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 4624 = 2535^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 6430849 - 2¹ = 6430847 is a prime.

Together with 6430847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6430841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3215424 + 3215425.

It is an arithmetic number, because the mean of its divisors is an integer number (3215425).

Almost surely, 2^6430849 is an apocalyptic number.

It is an amenable number.

6430849 is a deficient number, since it is larger than the sum of its proper divisors (1).

6430849 is an equidigital number, since it uses as much as digits as its factorization.

6430849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 6430849 is about 2535.9118675538. The cubic root of 6430849 is about 185.9613844374.

The spelling of 6430849 in words is "six million, four hundred thirty thousand, eight hundred forty-nine".