8208621049 has 4 divisors (see below), whose sum is σ = 8226198864. Its totient is φ = 8191043236.

The previous prime is 8208621011. The next prime is 8208621059. The reversal of 8208621049 is 9401268028.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8208621049 - 2⁷ = 8208620921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8208621059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8788207 + ... + 8789140.

It is an arithmetic number, because the mean of its divisors is an integer number (2056549716).

Almost surely, 2^8208621049 is an apocalyptic number.

It is an amenable number.

8208621049 is a deficient number, since it is larger than the sum of its proper divisors (17577815).

8208621049 is a wasteful number, since it uses less digits than its factorization.

8208621049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17577814.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 8208621049 is about 90601.4406563163. The cubic root of 8208621049 is about 2017.2361188066.

The spelling of 8208621049 in words is "eight billion, two hundred eight million, six hundred twenty-one thousand, forty-nine".