8212291 has 2 divisors, whose sum is σ = 8212292. Its totient is φ = 8212290.

The previous prime is 8212283. The next prime is 8212333. The reversal of 8212291 is 1922128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8212291 - 2³ = 8212283 is a prime.

It is not a weakly prime, because it can be changed into another prime (8212091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4106145 + 4106146.

It is an arithmetic number, because the mean of its divisors is an integer number (4106146).

Almost surely, 2^8212291 is an apocalyptic number.

8212291 is a deficient number, since it is larger than the sum of its proper divisors (1).

8212291 is an equidigital number, since it uses as much as digits as its factorization.

8212291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 25.

The square root of 8212291 is about 2865.7095107495. The cubic root of 8212291 is about 201.7536699325.

The spelling of 8212291 in words is "eight million, two hundred twelve thousand, two hundred ninety-one".