4999813321 has 2 divisors, whose sum is σ = 4999813322. Its totient is φ = 4999813320.

The previous prime is 4999813309. The next prime is 4999813327. The reversal of 4999813321 is 1233189994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4769836096 + 229977225 = 69064^2 + 15165^2 .

It is a cyclic number.

It is not a de Polignac number, because 4999813321 - 2⁷ = 4999813193 is a prime.

It is not a weakly prime, because it can be changed into another prime (4999813327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499906660 + 2499906661.

It is an arithmetic number, because the mean of its divisors is an integer number (2499906661).

Almost surely, 2^4999813321 is an apocalyptic number.

It is an amenable number.

4999813321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4999813321 is an equidigital number, since it uses as much as digits as its factorization.

4999813321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 49.

The square root of 4999813321 is about 70709.3580864655. The cubic root of 4999813321 is about 1709.9546653052.

The spelling of 4999813321 in words is "four billion, nine hundred ninety-nine million, eight hundred thirteen thousand, three hundred twenty-one".