291016867 has 2 divisors, whose sum is σ = 291016868. Its totient is φ = 291016866.

The previous prime is 291016837. The next prime is 291016879. The reversal of 291016867 is 768610192.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-291016867 is a prime.

It is not a weakly prime, because it can be changed into another prime (291016837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145508433 + 145508434.

It is an arithmetic number, because the mean of its divisors is an integer number (145508434).

Almost surely, 2^291016867 is an apocalyptic number.

291016867 is a deficient number, since it is larger than the sum of its proper divisors (1).

291016867 is an equidigital number, since it uses as much as digits as its factorization.

291016867 is an odious number, because the sum of its binary digits is odd.

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

The square root of 291016867 is about 17059.2164825938. The cubic root of 291016867 is about 662.6833417809.

The spelling of 291016867 in words is "two hundred ninety-one million, sixteen thousand, eight hundred sixty-seven".