985059391 has 2 divisors, whose sum is σ = 985059392. Its totient is φ = 985059390.

The previous prime is 985059343. The next prime is 985059403. The reversal of 985059391 is 193950589.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 985059391 - 2¹⁷ = 984928319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985059091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492529695 + 492529696.

It is an arithmetic number, because the mean of its divisors is an integer number (492529696).

Almost surely, 2^985059391 is an apocalyptic number.

985059391 is a deficient number, since it is larger than the sum of its proper divisors (1).

985059391 is an equidigital number, since it uses as much as digits as its factorization.

985059391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 437400, while the sum is 49.

The square root of 985059391 is about 31385.6558159934. The cubic root of 985059391 is about 994.9947866363.

The spelling of 985059391 in words is "nine hundred eighty-five million, fifty-nine thousand, three hundred ninety-one".