8972291 has 2 divisors, whose sum is σ = 8972292. Its totient is φ = 8972290.

The previous prime is 8972287. The next prime is 8972297. The reversal of 8972291 is 1922798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8972291 - 2² = 8972287 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8972297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4486145 + 4486146.

It is an arithmetic number, because the mean of its divisors is an integer number (4486146).

Almost surely, 2^8972291 is an apocalyptic number.

8972291 is a deficient number, since it is larger than the sum of its proper divisors (1).

8972291 is an equidigital number, since it uses as much as digits as its factorization.

8972291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 8972291 is about 2995.3782732737. The cubic root of 8972291 is about 207.7946923253.

The spelling of 8972291 in words is "eight million, nine hundred seventy-two thousand, two hundred ninety-one".