8429812397 has 2 divisors, whose sum is σ = 8429812398. Its totient is φ = 8429812396.

The previous prime is 8429812393. The next prime is 8429812411. The reversal of 8429812397 is 7932189248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7428026596 + 1001785801 = 86186^2 + 31651^2 .

It is a cyclic number.

It is not a de Polignac number, because 8429812397 - 2² = 8429812393 is a prime.

It is a super-2 number, since 2×8429812397² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8429812393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4214906198 + 4214906199.

It is an arithmetic number, because the mean of its divisors is an integer number (4214906199).

Almost surely, 2^8429812397 is an apocalyptic number.

It is an amenable number.

8429812397 is a deficient number, since it is larger than the sum of its proper divisors (1).

8429812397 is an equidigital number, since it uses as much as digits as its factorization.

8429812397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The square root of 8429812397 is about 91814.0098078719. The cubic root of 8429812397 is about 2035.1947322742.

The spelling of 8429812397 in words is "eight billion, four hundred twenty-nine million, eight hundred twelve thousand, three hundred ninety-seven".