8712463421 has 2 divisors, whose sum is σ = 8712463422. Its totient is φ = 8712463420.

The previous prime is 8712463393. The next prime is 8712463439. The reversal of 8712463421 is 1243642178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8706756100 + 5707321 = 93310^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 8712463421 - 2¹⁰ = 8712462397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8712463481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4356231710 + 4356231711.

It is an arithmetic number, because the mean of its divisors is an integer number (4356231711).

Almost surely, 2^8712463421 is an apocalyptic number.

It is an amenable number.

8712463421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8712463421 is an equidigital number, since it uses as much as digits as its factorization.

8712463421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 8712463421 is about 93340.5775694580. The cubic root of 8712463421 is about 2057.6917795417.

The spelling of 8712463421 in words is "eight billion, seven hundred twelve million, four hundred sixty-three thousand, four hundred twenty-one".