4644514421 has 2 divisors, whose sum is σ = 4644514422. Its totient is φ = 4644514420.

The previous prime is 4644514367. The next prime is 4644514463. The reversal of 4644514421 is 1244154464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3783972196 + 860542225 = 61514^2 + 29335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4644514421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4644514621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322257210 + 2322257211.

It is an arithmetic number, because the mean of its divisors is an integer number (2322257211).

Almost surely, 2^4644514421 is an apocalyptic number.

It is an amenable number.

4644514421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644514421 is an equidigital number, since it uses as much as digits as its factorization.

4644514421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61440, while the sum is 35.

The square root of 4644514421 is about 68150.6743987174. The cubic root of 4644514421 is about 1668.4509307904.

Adding to 4644514421 its reverse (1244154464), we get a palindrome (5888668885).

The spelling of 4644514421 in words is "four billion, six hundred forty-four million, five hundred fourteen thousand, four hundred twenty-one".