4399703417209 has 9 divisors (see below), whose sum is σ = 4413732231951. Its totient is φ = 4385719071360.

The previous prime is 4399703417191. The next prime is 4399703417227. The reversal of 4399703417209 is 9027143079934.

The square root of 4399703417209 is 2097547.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (4399703417191) and next prime (4399703417227).

It can be written as a sum of positive squares in only one way, i.e., 1536595764025 + 2863107653184 = 1239595^2 + 1692072^2 .

It is not a de Polignac number, because 4399703417209 - 2⁵ = 4399703417177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4399703417279) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 694284889 + ... + 694291225.

It is an arithmetic number, because the mean of its divisors is an integer number (490414692439).

Almost surely, 2^{4399703417209} is an apocalyptic number.

4399703417209 is the 2097547-th square number.

4399703417209 is the 1048774-th centered octagonal number.

It is an amenable number.

4399703417209 is a deficient number, since it is larger than the sum of its proper divisors (14028814742).

4399703417209 is an frugal number, since it uses more digits than its factorization.

4399703417209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13336 (or 6668 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 58.

The spelling of 4399703417209 in words is "four trillion, three hundred ninety-nine billion, seven hundred three million, four hundred seventeen thousand, two hundred nine".