4644656249 has 2 divisors, whose sum is σ = 4644656250. Its totient is φ = 4644656248.

The previous prime is 4644656201. The next prime is 4644656273. The reversal of 4644656249 is 9426564464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2531599225 + 2113057024 = 50315^2 + 45968^2 .

It is a cyclic number.

It is not a de Polignac number, because 4644656249 - 2²⁴ = 4627879033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4644656197 and 4644656206.

It is not a weakly prime, because it can be changed into another prime (4644652249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322328124 + 2322328125.

It is an arithmetic number, because the mean of its divisors is an integer number (2322328125).

Almost surely, 2^4644656249 is an apocalyptic number.

It is an amenable number.

4644656249 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644656249 is an equidigital number, since it uses as much as digits as its factorization.

4644656249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 50.

The square root of 4644656249 is about 68151.7149380703. The cubic root of 4644656249 is about 1668.4679135955.

The spelling of 4644656249 in words is "four billion, six hundred forty-four million, six hundred fifty-six thousand, two hundred forty-nine".