4464664649 has 2 divisors, whose sum is σ = 4464664650. Its totient is φ = 4464664648.

The previous prime is 4464664613. The next prime is 4464664651. The reversal of 4464664649 is 9464664644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4292215225 + 172449424 = 65515^2 + 13132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4464664649 is a prime.

Together with 4464664651, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4464664649.

It is not a weakly prime, because it can be changed into another prime (4464664549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2232332324 + 2232332325.

It is an arithmetic number, because the mean of its divisors is an integer number (2232332325).

Almost surely, 2^4464664649 is an apocalyptic number.

It is an amenable number.

4464664649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4464664649 is an equidigital number, since it uses as much as digits as its factorization.

4464664649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11943936, while the sum is 53.

The square root of 4464664649 is about 66818.1461056800. The cubic root of 4464664649 is about 1646.6309768190.

The spelling of 4464664649 in words is "four billion, four hundred sixty-four million, six hundred sixty-four thousand, six hundred forty-nine".