8399210049 has 24 divisors (see below), whose sum is σ = 12466400232. Its totient is φ = 5445377280.

The previous prime is 8399210047. The next prime is 8399210051. The reversal of 8399210049 is 9400129938.

8399210049 is a `hidden beast` number, since 8 + 399 + 210 + 0 + 49 = 666.

It is an interprime number because it is at equal distance from previous prime (8399210047) and next prime (8399210051).

It can be written as a sum of positive squares in 4 ways, for example, as 1998090000 + 6401120049 = 44700^2 + 80007^2 .

It is not a de Polignac number, because 8399210049 - 2¹ = 8399210047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8399209986 and 8399210013.

It is not an unprimeable number, because it can be changed into a prime (8399210041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 807687 + ... + 818019.

It is an arithmetic number, because the mean of its divisors is an integer number (519433343).

Almost surely, 2^8399210049 is an apocalyptic number.

It is an amenable number.

8399210049 is a deficient number, since it is larger than the sum of its proper divisors (4067190183).

8399210049 is a wasteful number, since it uses less digits than its factorization.

8399210049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12817 (or 12814 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 8399210049 is about 91647.2042617777. The cubic root of 8399210049 is about 2032.7289891465.

The spelling of 8399210049 in words is "eight billion, three hundred ninety-nine million, two hundred ten thousand, forty-nine".