8212393307 has 4 divisors (see below), whose sum is σ = 8212699080. Its totient is φ = 8212087536.

The previous prime is 8212393297. The next prime is 8212393309. The reversal of 8212393307 is 7033932128.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8212393307 - 2⁴ = 8212393291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8212393309) 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, 108257 + ... + 167762.

It is an arithmetic number, because the mean of its divisors is an integer number (2053174770).

Almost surely, 2^8212393307 is an apocalyptic number.

8212393307 is a deficient number, since it is larger than the sum of its proper divisors (305773).

8212393307 is a wasteful number, since it uses less digits than its factorization.

8212393307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305772.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 8212393307 is about 90622.2561350135. The cubic root of 8212393307 is about 2017.5450773064.

The spelling of 8212393307 in words is "eight billion, two hundred twelve million, three hundred ninety-three thousand, three hundred seven".