8320948399 has 4 divisors (see below), whose sum is σ = 8331209320. Its totient is φ = 8310687480.

The previous prime is 8320948379. The next prime is 8320948403. The reversal of 8320948399 is 9938490238.

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 8320948399 - 2⁷ = 8320948271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8320948309) 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, 5129244 + ... + 5130865.

It is an arithmetic number, because the mean of its divisors is an integer number (2082802330).

Almost surely, 2^8320948399 is an apocalyptic number.

8320948399 is a deficient number, since it is larger than the sum of its proper divisors (10260921).

8320948399 is a wasteful number, since it uses less digits than its factorization.

8320948399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260920.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The square root of 8320948399 is about 91219.2326157154. The cubic root of 8320948399 is about 2026.3957982539.

The spelling of 8320948399 in words is "eight billion, three hundred twenty million, nine hundred forty-eight thousand, three hundred ninety-nine".