8199427 has 2 divisors, whose sum is σ = 8199428. Its totient is φ = 8199426.

The previous prime is 8199419. The next prime is 8199449. The reversal of 8199427 is 7249918.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8199427 - 2³ = 8199419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8199427.

It is not a weakly prime, because it can be changed into another prime (8199497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4099713 + 4099714.

It is an arithmetic number, because the mean of its divisors is an integer number (4099714).

Almost surely, 2^8199427 is an apocalyptic number.

8199427 is a deficient number, since it is larger than the sum of its proper divisors (1).

8199427 is an equidigital number, since it uses as much as digits as its factorization.

8199427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 8199427 is about 2863.4641607675. The cubic root of 8199427 is about 201.6482703738.

The spelling of 8199427 in words is "eight million, one hundred ninety-nine thousand, four hundred twenty-seven".