8428291 has 2 divisors, whose sum is σ = 8428292. Its totient is φ = 8428290.

The previous prime is 8428289. The next prime is 8428297. The reversal of 8428291 is 1928248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8428291 - 2¹ = 8428289 is a prime.

Together with 8428289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8428297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4214145 + 4214146.

It is an arithmetic number, because the mean of its divisors is an integer number (4214146).

Almost surely, 2^8428291 is an apocalyptic number.

8428291 is a deficient number, since it is larger than the sum of its proper divisors (1).

8428291 is an equidigital number, since it uses as much as digits as its factorization.

8428291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 8428291 is about 2903.1519078409. The cubic root of 8428291 is about 203.5072288843.

The spelling of 8428291 in words is "eight million, four hundred twenty-eight thousand, two hundred ninety-one".