985291 has 2 divisors, whose sum is σ = 985292. Its totient is φ = 985290.

The previous prime is 985279. The next prime is 985301. The reversal of 985291 is 192589.

985291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 985291 - 2¹¹ = 983243 is a prime.

985291 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (985991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492645 + 492646.

It is an arithmetic number, because the mean of its divisors is an integer number (492646).

2⁹⁸⁵²⁹¹ is an apocalyptic number.

985291 is a deficient number, since it is larger than the sum of its proper divisors (1).

985291 is an equidigital number, since it uses as much as digits as its factorization.

985291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 34.

The square root of 985291 is about 992.6182549198. The cubic root of 985291 is about 99.5072762202.

The spelling of 985291 in words is "nine hundred eighty-five thousand, two hundred ninety-one".