8315420899 has 4 divisors (see below), whose sum is σ = 8317999360. Its totient is φ = 8312842440.

The previous prime is 8315420881. The next prime is 8315420921. The reversal of 8315420899 is 9980245138.

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 8315420899 - 2¹¹ = 8315418851 is a prime.

It is a Sastry number since concatenated with its successor gives a square.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8315420599) 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, 1284387 + ... + 1290844.

It is an arithmetic number, because the mean of its divisors is an integer number (2079499840).

Almost surely, 2^8315420899 is an apocalyptic number.

8315420899 is a deficient number, since it is larger than the sum of its proper divisors (2578461).

8315420899 is a wasteful number, since it uses less digits than its factorization.

8315420899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578460.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 8315420899 is about 91188.9296954406. The cubic root of 8315420899 is about 2025.9469958915.

The spelling of 8315420899 in words is "eight billion, three hundred fifteen million, four hundred twenty thousand, eight hundred ninety-nine".