8397806419 has 2 divisors, whose sum is σ = 8397806420. Its totient is φ = 8397806418.

The previous prime is 8397806393. The next prime is 8397806479. The reversal of 8397806419 is 9146087938.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8397806419 - 2⁹ = 8397805907 is a prime.

It is a super-2 number, since 2×8397806419² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8397806419.

It is not a weakly prime, because it can be changed into another prime (8397806479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4198903209 + 4198903210.

It is an arithmetic number, because the mean of its divisors is an integer number (4198903210).

Almost surely, 2^8397806419 is an apocalyptic number.

8397806419 is a deficient number, since it is larger than the sum of its proper divisors (1).

8397806419 is an equidigital number, since it uses as much as digits as its factorization.

8397806419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 8397806419 is about 91639.5461523026. The cubic root of 8397806419 is about 2032.6157499916.

The spelling of 8397806419 in words is "eight billion, three hundred ninety-seven million, eight hundred six thousand, four hundred nineteen".