8213147 has 2 divisors, whose sum is σ = 8213148. Its totient is φ = 8213146.

The previous prime is 8213131. The next prime is 8213167. The reversal of 8213147 is 7413128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8213147 - 2⁴ = 8213131 is a prime.

It is not a weakly prime, because it can be changed into another prime (8213167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4106573 + 4106574.

It is an arithmetic number, because the mean of its divisors is an integer number (4106574).

Almost surely, 2^8213147 is an apocalyptic number.

8213147 is a deficient number, since it is larger than the sum of its proper divisors (1).

8213147 is an equidigital number, since it uses as much as digits as its factorization.

8213147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 26.

The square root of 8213147 is about 2865.8588590508. The cubic root of 8213147 is about 201.7606795534.

The spelling of 8213147 in words is "eight million, two hundred thirteen thousand, one hundred forty-seven".