8321457479 has 2 divisors, whose sum is σ = 8321457480. Its totient is φ = 8321457478.

The previous prime is 8321457439. The next prime is 8321457499. The reversal of 8321457479 is 9747541238.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8321457479 - 2²⁸ = 8053022023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8321457439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4160728739 + 4160728740.

It is an arithmetic number, because the mean of its divisors is an integer number (4160728740).

Almost surely, 2^8321457479 is an apocalyptic number.

8321457479 is a deficient number, since it is larger than the sum of its proper divisors (1).

8321457479 is an equidigital number, since it uses as much as digits as its factorization.

8321457479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 50.

The square root of 8321457479 is about 91222.0229933540. The cubic root of 8321457479 is about 2026.4371227315.

The spelling of 8321457479 in words is "eight billion, three hundred twenty-one million, four hundred fifty-seven thousand, four hundred seventy-nine".